NL275292A - - Google Patents
Info
- Publication number
- NL275292A NL275292A NL275292DA NL275292A NL 275292 A NL275292 A NL 275292A NL 275292D A NL275292D A NL 275292DA NL 275292 A NL275292 A NL 275292A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/12—Electrically-operated arrangements for indicating correct tuning
- H03J3/14—Visual indication, e.g. magic eye
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/18—Arsenic, antimony or bismuth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/843—Arsenic, antimony or bismuth
- B01J23/8435—Antimony
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/843—Arsenic, antimony or bismuth
- B01J23/8437—Bismuth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/16—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr
- B01J27/18—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr with metals other than Al or Zr
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/02—Preparation, separation or purification of hydrogen cyanide
- C01C3/0208—Preparation in gaseous phase
- C01C3/0212—Preparation in gaseous phase from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-process
- C01C3/0216—Preparation in gaseous phase from hydrocarbons and ammonia in the presence of oxygen, e.g. the Andrussow-process characterised by the catalyst used
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
- C07C45/34—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds
- C07C45/35—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds in propene or isobutene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/42—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor
- C07C5/48—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/22—Amides of acids of phosphorus
- C07F9/224—Phosphorus triamides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S585/00—Chemistry of hydrocarbon compounds
- Y10S585/8995—Catalyst and recycle considerations
- Y10S585/906—Catalyst preservation or manufacture, e.g. activation before use
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1452060A GB902952A (en) | 1960-04-26 | 1960-04-26 | Production of conjugated diolefines |
GB11434/61A GB904602A (en) | 1960-04-26 | 1960-04-26 | Oxidation catalysts |
GB2120560 | 1960-06-16 | ||
GB8405/61A GB931940A (en) | 1960-04-26 | 1961-03-08 | Hardened catalyst compositions |
GB8109/62A GB961357A (en) | 1960-04-26 | 1962-03-02 | Catalytic compositions |
GB13236/62A GB961361A (en) | 1960-04-26 | 1962-04-06 | Catalytic compositions |
GB19749/62A GB968924A (en) | 1960-04-26 | 1962-05-23 | Improvements in or relating to catalytic compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
NL275292A true NL275292A (xx) |
Family
ID=27562562
Family Applications (8)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL292901D NL292901A (xx) | 1960-04-26 | ||
NL275292D NL275292A (xx) | 1960-04-26 | ||
NL263990D NL263990A (xx) | 1960-04-26 | ||
NL291063D NL291063A (xx) | 1960-04-26 | ||
NL289570D NL289570A (xx) | 1960-04-26 | ||
NL265916D NL265916A (xx) | 1960-04-26 | ||
NL61263990A NL140505B (nl) | 1960-04-26 | 1961-04-25 | Werkwijze voor de bereiding van een geconjugeerd dialkeen. |
NL63291063A NL140164B (nl) | 1960-04-26 | 1963-04-03 | Werkwijze ter bereiding van een antimoon- en tinoxyde bevattende katalysator. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL292901D NL292901A (xx) | 1960-04-26 |
Family Applications After (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL263990D NL263990A (xx) | 1960-04-26 | ||
NL291063D NL291063A (xx) | 1960-04-26 | ||
NL289570D NL289570A (xx) | 1960-04-26 | ||
NL265916D NL265916A (xx) | 1960-04-26 | ||
NL61263990A NL140505B (nl) | 1960-04-26 | 1961-04-25 | Werkwijze voor de bereiding van een geconjugeerd dialkeen. |
NL63291063A NL140164B (nl) | 1960-04-26 | 1963-04-03 | Werkwijze ter bereiding van een antimoon- en tinoxyde bevattende katalysator. |
Country Status (8)
Country | Link |
---|---|
US (3) | US3328478A (xx) |
BE (4) | BE614364A (xx) |
CA (1) | CA718898A (xx) |
DE (4) | DE1264434B (xx) |
GB (5) | GB904602A (xx) |
MX (1) | MX76384A (xx) |
NL (8) | NL140505B (xx) |
SE (1) | SE303736B (xx) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE636567A (xx) * | 1962-09-01 | |||
GB997490A (en) * | 1963-04-05 | 1965-07-07 | Distillers Co Yeast Ltd | Improvements in or relating to oxidation catalysts |
GB1007685A (en) * | 1963-06-20 | 1965-10-22 | Distillers Co Yeast Ltd | Improvements in or relating to catalyst compositions |
DE1247277B (de) * | 1963-09-19 | 1967-08-17 | Knapsack Ag | Verfahren zur Herstellung eines Oxyde des Vanadiums und Zinns enthaltenden Katalysators |
GB1099398A (en) * | 1965-11-05 | 1968-01-17 | Distillers Co Yeast Ltd | Improvements in or relating to the production of conjugated diolefines |
US3501547A (en) * | 1967-05-19 | 1970-03-17 | Phillips Petroleum Co | Dehydrogenation |
GB1195038A (en) * | 1967-11-06 | 1970-06-17 | Ici Ltd | Ammoxidation of Hydrocarbons. |
GB1195036A (en) * | 1967-11-06 | 1970-06-17 | Ici Ltd | Ammoxidation of Hydrocarbons. |
US3720724A (en) * | 1970-06-03 | 1973-03-13 | Phillips Petroleum Co | Dehydrogenation cyclohexane or mono- or polyalkylcyclohexanes |
US3688002A (en) * | 1970-07-09 | 1972-08-29 | Ube Industries | Process for producing acrylonitrile or methacrylonitrile |
GB1391453A (en) * | 1971-04-27 | 1975-04-23 | Ici Ltd | Treating hydrocarbons |
US4005048A (en) * | 1971-04-27 | 1977-01-25 | Imperial Chemical Industries Limited | Treating hydrocarbons |
GB1364587A (en) * | 1972-03-17 | 1974-08-21 | Bp Chem Int Ltd | Catalyst composition |
GB1417787A (en) * | 1972-11-13 | 1975-12-17 | Mitsubishi Rayon Co | Catalyst composition for oxidation of butenes |
US4165441A (en) * | 1977-06-06 | 1979-08-21 | Mitsubishi Chemical Industries, Ltd. | Process for the preparation of styrene |
DK445277A (da) * | 1977-10-07 | 1979-04-08 | Foss Electric As | Fremgangsmaade og katalysator til bestemmelse af nitrogen i en stofproeve efter kjeldahlprincippet |
JPS5990633A (ja) * | 1982-11-12 | 1984-05-25 | Nitto Chem Ind Co Ltd | アンチモン含有金属酸化物触媒の製造法または活性化法 |
JPS60137438A (ja) * | 1983-09-28 | 1985-07-22 | Nitto Chem Ind Co Ltd | アンチモン含有金属酸化物触媒の製法 |
US4709118A (en) * | 1986-09-24 | 1987-11-24 | Mobil Oil Corporation | Removal of mercury from natural gas and liquid hydrocarbons utilizing downstream guard chabmer |
US5336822A (en) * | 1992-01-28 | 1994-08-09 | The Dow Chemical Company | Process for the production of styrene |
US5854172A (en) * | 1997-01-17 | 1998-12-29 | The Standard Oil Company | Preparation of vanadium antimonate based catalysts using SnO2 ·xH2 O |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1975476A (en) * | 1929-01-19 | 1934-10-02 | Ig Farbenindustrie Ag | Production of organic compounds by dehydrogenation |
US2326258A (en) * | 1938-12-19 | 1943-08-10 | Schmidt Otto | Production of butadiene |
US2783185A (en) * | 1953-09-28 | 1957-02-26 | Standard Oil Co | Oxidative reforming of naphtha |
US2941007A (en) * | 1957-06-10 | 1960-06-14 | Standard Oil Co | Process for the oxidation of olefins |
US2945900A (en) * | 1957-08-01 | 1960-07-19 | Polymer Corp | Catalytic dehydrogenation of hydrocarbons |
GB832677A (en) * | 1958-11-20 | 1960-04-13 | Polymer Corp | Process for dehydrogenating hydrocarbons |
US3198751A (en) * | 1959-02-17 | 1965-08-03 | Distillers Co Yeast Ltd | Stannic oxide-antimony tetroxide catalyst composition |
BE587685A (xx) * | 1959-04-02 | |||
CA718025A (en) * | 1959-02-24 | 1965-09-14 | The Standard Oil Company | Process for the manufacture of acrylonitrile |
US3044965A (en) * | 1959-04-16 | 1962-07-17 | Standard Oil Co | Process for the manufacture of bismuth catalysts |
US3152170A (en) * | 1959-07-01 | 1964-10-06 | Distillers Co Yeast Ltd | Production of unsaturated aliphatic nitriles |
CA677475A (en) * | 1962-12-08 | 1964-01-07 | The Distillers Company Limited | Production of unsaturated aliphatic nitriles |
NL256686A (xx) * | 1959-10-28 | |||
FR1272308A (fr) * | 1959-10-28 | 1961-09-22 | Distillers Co Yeast Ltd | Procédé de production de nitriles aliphatiques non saturés |
US2991321A (en) * | 1959-12-29 | 1961-07-04 | Shell Oil Co | Dehydrogenation in the presence of oxygen and bismuth phosphate |
US3149914A (en) * | 1960-06-21 | 1964-09-22 | Distillers Co Yeast Ltd | Production of hydrogen cyanide |
US3080435A (en) * | 1960-07-18 | 1963-03-05 | Shell Oil Co | Dehydrogenation process |
US3207806A (en) * | 1960-11-23 | 1965-09-21 | Petro Tex Chem Corp | Dehydrogenation process |
US3135807A (en) * | 1960-12-30 | 1964-06-02 | Standard Oil Co | Manufacture of methyl t-butyl ether |
BE615317A (xx) * | 1961-03-22 | |||
US3207807A (en) * | 1962-05-28 | 1965-09-21 | Petro Tex Chem Corp | Dehydrogenation process |
US3207810A (en) * | 1962-12-04 | 1965-09-21 | Petro Tex Chem Corp | Unsaturated hydrocarbon production |
-
0
- BE BE632662D patent/BE632662A/xx unknown
- NL NL292901D patent/NL292901A/xx unknown
- NL NL275292D patent/NL275292A/xx unknown
- BE BE604856D patent/BE604856A/xx unknown
- BE BE603068D patent/BE603068A/xx unknown
- CA CA718898A patent/CA718898A/en not_active Expired
- BE BE614364D patent/BE614364A/xx unknown
- MX MX76384D patent/MX76384A/es unknown
- NL NL263990D patent/NL263990A/xx unknown
- NL NL291063D patent/NL291063A/xx unknown
- NL NL289570D patent/NL289570A/xx unknown
- NL NL265916D patent/NL265916A/xx unknown
-
1960
- 1960-04-26 GB GB11434/61A patent/GB904602A/en not_active Expired
-
1961
- 1961-03-08 GB GB8405/61A patent/GB931940A/en not_active Expired
- 1961-04-11 US US102106A patent/US3328478A/en not_active Expired - Lifetime
- 1961-04-19 DE DED35880A patent/DE1264434B/de active Pending
- 1961-04-25 NL NL61263990A patent/NL140505B/xx not_active IP Right Cessation
- 1961-06-09 SE SE6073/61A patent/SE303736B/xx unknown
-
1962
- 1962-03-02 DE DE19621442630 patent/DE1442630A1/de active Pending
- 1962-03-02 GB GB8109/62A patent/GB961357A/en not_active Expired
- 1962-04-06 GB GB13236/62A patent/GB961361A/en not_active Expired
- 1962-05-23 GB GB19749/62A patent/GB968924A/en not_active Expired
-
1963
- 1963-03-07 DE DED41069A patent/DE1284950B/de active Pending
- 1963-03-18 US US266034A patent/US3258432A/en not_active Expired - Lifetime
- 1963-04-03 NL NL63291063A patent/NL140164B/xx unknown
- 1963-05-15 US US280721A patent/US3269957A/en not_active Expired - Lifetime
- 1963-05-22 DE DE19631442637 patent/DE1442637A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
SE303736B (xx) | 1968-09-09 |
DE1442630A1 (de) | 1968-10-31 |
GB904602A (en) | 1962-08-29 |
US3328478A (en) | 1967-06-27 |
MX76384A (xx) | |
US3269957A (en) | 1966-08-30 |
NL263990A (xx) | |
BE604856A (xx) | |
GB931940A (en) | 1963-07-24 |
NL291063A (xx) | |
NL292901A (xx) | |
BE632662A (xx) | |
GB968924A (en) | 1964-09-09 |
GB961357A (en) | 1964-06-17 |
NL140164B (nl) | 1973-11-15 |
DE1284950B (de) | 1968-12-12 |
GB961361A (en) | 1964-06-17 |
NL140505B (nl) | 1973-12-17 |
DE1442637A1 (de) | 1969-02-20 |
NL289570A (xx) | |
NL265916A (xx) | |
BE614364A (xx) | |
BE603068A (xx) | |
CA718898A (en) | 1965-09-28 |
US3258432A (en) | 1966-06-28 |
DE1264434B (de) | 1968-03-28 |