JPS50125113A - - Google Patents
Info
- Publication number
- JPS50125113A JPS50125113A JP50027651A JP2765175A JPS50125113A JP S50125113 A JPS50125113 A JP S50125113A JP 50027651 A JP50027651 A JP 50027651A JP 2765175 A JP2765175 A JP 2765175A JP S50125113 A JPS50125113 A JP S50125113A
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
- F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
- F01L7/021—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with one rotary valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
- F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
- F01L7/021—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with one rotary valve
- F01L7/024—Cylindrical valves comprising radial inlet and axial outlet or axial inlet and radial outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
- F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
- F01L7/026—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves with two or more rotary valves, their rotational axes being parallel, e.g. 4-stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
- F01L7/18—Component parts, details, or accessories not provided for in preceding subgroups of this group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B17/00—Engines characterised by means for effecting stratification of charge in cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B19/00—Engines characterised by precombustion chambers
- F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
- F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
- F02B19/1023—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s)
- F02B19/1028—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber and cylinder having both intake ports or valves, e.g. HONDS CVCC
- F02B19/1033—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber pre-combustion chamber and cylinder being fed with fuel-air mixture(s) pre-combustion chamber and cylinder having both intake ports or valves, e.g. HONDS CVCC specially adapted valves, e.g. rotary valves, pre-combustion chamber being part of a valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Characterised By The Charging Evacuation (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/449,241 US3948227A (en) | 1974-03-08 | 1974-03-08 | Stratified charge engine |
US05/532,391 US4036184A (en) | 1974-03-08 | 1974-12-13 | Stratified charge engine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS50125113A true JPS50125113A (ja) | 1975-10-01 |
Family
ID=27035642
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50027650A Pending JPS50125109A (ja) | 1974-03-08 | 1975-03-08 | |
JP50027653A Pending JPS50125115A (ja) | 1974-03-08 | 1975-03-08 | |
JP50027651A Pending JPS50125113A (ja) | 1974-03-08 | 1975-03-08 | |
JP50027652A Pending JPS50125114A (ja) | 1974-03-08 | 1975-03-08 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50027650A Pending JPS50125109A (ja) | 1974-03-08 | 1975-03-08 | |
JP50027653A Pending JPS50125115A (ja) | 1974-03-08 | 1975-03-08 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50027652A Pending JPS50125114A (ja) | 1974-03-08 | 1975-03-08 |
Country Status (20)
Country | Link |
---|---|
US (1) | US4036184A (ja) |
JP (4) | JPS50125109A (ja) |
AR (3) | AR219044A1 (ja) |
AU (1) | AU499270B2 (ja) |
BR (4) | BR7501359A (ja) |
CA (4) | CA1024072A (ja) |
DE (4) | DE2510004A1 (ja) |
ES (2) | ES435440A1 (ja) |
FI (4) | FI55895C (ja) |
FR (4) | FR2263372B1 (ja) |
GB (4) | GB1496283A (ja) |
IE (4) | IE43019B1 (ja) |
IL (4) | IL46764A (ja) |
IN (1) | IN143592B (ja) |
IT (4) | IT1034114B (ja) |
NL (4) | NL7502782A (ja) |
PH (4) | PH12994A (ja) |
SE (4) | SE401387B (ja) |
YU (3) | YU55175A (ja) |
ZA (1) | ZA751408B (ja) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4149493A (en) * | 1972-09-29 | 1979-04-17 | Motoren-Forschungs Gmbh Kg | Multi-cylinder internal combustion engine |
US4163438A (en) * | 1975-11-26 | 1979-08-07 | Dana Corporation | Rotary valve timing apparatus |
US4160430A (en) * | 1977-12-01 | 1979-07-10 | Bell John L | Stratified charge internal combustion engine |
IT1103626B (it) * | 1978-07-20 | 1985-10-14 | Borracci Pasquale Dr Ing | Sistema di alimentazione nei motori a scoppio con ciclo otto per avere la fase di compressione a pressione massima a qualsiasi regime ed una stratificazione differenziata nella miscela ottenendo separata l'introduzione di aria pura o gas inerte dalla miscela carburata per ridurre allo scarico o gas nocivi |
IE811742L (en) * | 1981-07-30 | 1983-01-30 | George Coates | Internal combustion engine having rotary inlet and exhaust¹valves |
GB2118601A (en) * | 1982-04-21 | 1983-11-02 | Draftex Dev Ag | Windows |
JPS5928006A (ja) * | 1982-08-05 | 1984-02-14 | Ngk Spark Plug Co Ltd | セラミック製シリンダヘッド |
JPS5954715A (ja) * | 1982-09-20 | 1984-03-29 | Ngk Spark Plug Co Ltd | 弁体変位機構付きセラミック製ロータリバルブ方式多気筒内燃機関 |
US4610223A (en) * | 1984-09-04 | 1986-09-09 | Paul Karlan | Cam engine |
US4813392A (en) * | 1984-11-15 | 1989-03-21 | Hansen Engine Corporation | Rotary valve assembly |
US4773364A (en) * | 1984-11-15 | 1988-09-27 | Hansen Engine Corporation | Internal combustion engine with rotary combustion chamber |
US5000136A (en) * | 1984-11-15 | 1991-03-19 | Hansen Craig N | Internal combustion engine with rotary valve assembly |
US4612886A (en) * | 1984-11-15 | 1986-09-23 | Hansen Engine Corporation | Internal combustion engine with rotary combustion chamber |
AU586459B2 (en) * | 1986-01-23 | 1989-07-13 | Arthur Ernest Bishop | Rotary valve for internal combustion engines |
GB2190139A (en) * | 1986-05-03 | 1987-11-11 | Howard Brian Leitch | Rotary spool valve |
US4867117A (en) * | 1987-12-22 | 1989-09-19 | Scalise Michael A | Rotary valve with integrated combustion chamber |
US4960086A (en) * | 1989-04-10 | 1990-10-02 | Rassey Louis J | Rotary valve construction utilizing a compressed gas as lubricant and coolant |
JPH0751889B2 (ja) * | 1989-06-20 | 1995-06-05 | 巧 室木 | ロータリー弁装置 |
US4926809A (en) * | 1989-08-10 | 1990-05-22 | Allen Charles A | Internal combustion engine with rotary valve |
US4949685A (en) * | 1989-10-25 | 1990-08-21 | Doland George J | Internal combustion engine with rotary valves |
US5448971A (en) * | 1990-06-20 | 1995-09-12 | Group Lotus Limited | Internal combustion engine and an improved rotary inlet valve for use therewith |
GB9013788D0 (en) * | 1990-06-20 | 1990-08-08 | Lotus Group Plc | Internal combustion engine and an improved rotary inlet valve for use therewith |
US5095870A (en) * | 1991-06-17 | 1992-03-17 | Place George C | Rotary valve four-cycle engine |
US5205251A (en) * | 1992-08-05 | 1993-04-27 | Ibex Technologies, Inc. | Rotary valve for internal combustion engine |
US5251591A (en) * | 1992-08-10 | 1993-10-12 | Corrin William R | Rotary valve for an internal combustion engine |
US5474036A (en) * | 1994-02-25 | 1995-12-12 | Hansen Engine Corporation | Internal combustion engine with rotary valve assembly having variable intake valve timing |
US5490485A (en) * | 1994-06-14 | 1996-02-13 | Kutlucinar; Iskender V. | Rotary valve for internal combustion engine |
DE19541423A1 (de) * | 1995-11-07 | 1997-05-15 | Andreas Hennecke | Vorrichtung zur Steuerung des Gasaustauschs bei Viertaktmotoren |
US5738051A (en) * | 1996-03-06 | 1998-04-14 | Outboard Marine Corporation | Four-cycle marine engine |
US5967108A (en) | 1996-09-11 | 1999-10-19 | Kutlucinar; Iskender | Rotary valve system |
US5878707A (en) * | 1997-09-22 | 1999-03-09 | Ballard; Donald | Rotary valve internal combustion engine |
US6029617A (en) * | 1998-05-12 | 2000-02-29 | Lambert; Steven | Modular rotary discoid valve assembly for engines and other applications |
AUPQ783600A0 (en) * | 2000-05-30 | 2000-06-22 | Bishop Innovation Limited | Variable timing mechanism for a rotary valve |
US6390048B1 (en) * | 2000-07-13 | 2002-05-21 | Kevin M. Luchansky | Valve apparatus for internal combustion engine |
US6755171B1 (en) * | 2000-10-30 | 2004-06-29 | Travis D. Brawner | Twin rotary valves for a four stroke internal combustion engine |
US6691664B2 (en) * | 2001-04-12 | 2004-02-17 | Joseph Samuel Pisano | Direct port rotary valve mechanism with variable timing for internal combustion engines |
AUPR531501A0 (en) * | 2001-05-30 | 2001-06-21 | Bishop Innovation Limited | Variable valve timing mechanism for a rotary valve |
CA2514744A1 (en) * | 2003-02-12 | 2004-08-26 | D-J Engineering, Inc. | Air injection engine |
WO2006024081A1 (en) * | 2004-09-01 | 2006-03-09 | Bishop Innovation Limited | Gas and oil sealing in a rotary valve |
AU2005279690B2 (en) * | 2004-09-01 | 2008-08-21 | Bishop Innovation Limited | Gas and oil sealing in a rotary valve |
DE102006006628B3 (de) * | 2006-02-09 | 2007-04-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Steuerorgan für eine Zylinder-Kolben-Einheit |
WO2009039877A1 (de) * | 2007-09-19 | 2009-04-02 | Lisa Dräxlmaier GmbH | Zylinderkopf für einen verbrennungsmotor |
WO2010069336A1 (en) * | 2008-12-15 | 2010-06-24 | Abdel Fattah Mohamed Hatem Abouseira | Four stroke cycle reciprocating engine works with out valves and camshaft |
US8616173B2 (en) * | 2010-12-08 | 2013-12-31 | GM Global Technology Operations LLC | Engine assembly including modified intake port arrangement |
US9115606B2 (en) | 2011-10-10 | 2015-08-25 | Vaztec, Llc | Head assembly for an internal combustion engine |
TWI495783B (zh) * | 2013-01-11 | 2015-08-11 | Nat Univ Tsing Hua | 具有轉動式進氣排氣機構的氣動引擎 |
USD755249S1 (en) | 2015-01-29 | 2016-05-03 | Vaztec, Llc | Rotary valve chamber |
USD776793S1 (en) | 2015-01-29 | 2017-01-17 | Vaztec, Llc | Rotary valve |
USD766331S1 (en) | 2015-01-29 | 2016-09-13 | Vaztec, Llc | Seal |
US9869397B2 (en) | 2015-01-29 | 2018-01-16 | Vaztec Engine Venture, Llc | Modular rotary valve apparatus |
USD755248S1 (en) | 2015-01-29 | 2016-05-03 | Vaztec, Llc | Rotary valve spring |
US9903239B2 (en) | 2015-01-29 | 2018-02-27 | Vaztec Engine Venture, Llc | Engine with rotary valve apparatus |
USD755356S1 (en) | 2015-01-29 | 2016-05-03 | Vaztec, Llc | Seal |
CN107246293A (zh) * | 2017-05-04 | 2017-10-13 | 夏周旋 | 一种筒式进排气装置及内燃机缸盖 |
CN109386336A (zh) * | 2017-08-08 | 2019-02-26 | 罗灿 | 可调周转式旋塞阀 |
US10677190B2 (en) | 2017-09-13 | 2020-06-09 | Vaztec Engine Venture, Llc | Engine with rotating valve assembly |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1030927A (en) * | 1910-02-12 | 1912-07-02 | Nathaniel S Seeley | Engine valve mechanism. |
US1077317A (en) * | 1912-07-08 | 1913-11-04 | Carl E Swenson | Valve for internal-combustion engines. |
US1245257A (en) * | 1912-07-16 | 1917-11-06 | Martin J Miller | Reciprocating engine. |
US1578581A (en) * | 1922-04-29 | 1926-03-30 | Alfred P J Pinel | Internal-combustion engine |
US1890326A (en) * | 1931-02-27 | 1932-12-06 | Sern L Hansen | Valve structure for gas engines |
US1917816A (en) * | 1931-03-31 | 1933-07-11 | William H D Spears | Valve |
US2007608A (en) * | 1931-05-27 | 1935-07-09 | Gen Motors Corp | Two cycle engine |
US2155143A (en) * | 1937-06-25 | 1939-04-18 | Gage C Mcdermett | Internal combustion engine |
NL160912C (nl) * | 1972-11-27 | Honda Motor Co Ltd | Carburator. | |
JPS49104019A (ja) * | 1973-02-13 | 1974-10-02 | ||
US3896781A (en) * | 1974-07-10 | 1975-07-29 | Gen Motors Corp | Dual rotary valved internal combustion engine |
-
1974
- 1974-12-13 US US05/532,391 patent/US4036184A/en not_active Expired - Lifetime
-
1975
- 1975-03-07 IT IT21056/75A patent/IT1034114B/it active
- 1975-03-07 GB GB9488/75A patent/GB1496283A/en not_active Expired
- 1975-03-07 GB GB9487/75A patent/GB1496282A/en not_active Expired
- 1975-03-07 CA CA221,499A patent/CA1024072A/en not_active Expired
- 1975-03-07 PH PH16882A patent/PH12994A/en unknown
- 1975-03-07 YU YU00551/75A patent/YU55175A/xx unknown
- 1975-03-07 PH PH16885A patent/PH12997A/en unknown
- 1975-03-07 SE SE7502573A patent/SE401387B/xx unknown
- 1975-03-07 FI FI750671A patent/FI55895C/fi not_active IP Right Cessation
- 1975-03-07 SE SE7502572A patent/SE422968B/xx not_active IP Right Cessation
- 1975-03-07 DE DE19752510004 patent/DE2510004A1/de not_active Withdrawn
- 1975-03-07 SE SE7502574A patent/SE401947B/xx unknown
- 1975-03-07 BR BR1359/75A patent/BR7501359A/pt unknown
- 1975-03-07 CA CA221,594A patent/CA1015278A/en not_active Expired
- 1975-03-07 IT IT21057/75A patent/IT1034115B/it active
- 1975-03-07 DE DE19752510101 patent/DE2510101A1/de not_active Withdrawn
- 1975-03-07 SE SE7502575A patent/SE7502575L/xx not_active Application Discontinuation
- 1975-03-07 PH PH16883A patent/PH13027A/en unknown
- 1975-03-07 YU YU00549/75A patent/YU54975A/xx unknown
- 1975-03-07 ZA ZA00751408A patent/ZA751408B/xx unknown
- 1975-03-07 DE DE19752510102 patent/DE2510102A1/de not_active Withdrawn
- 1975-03-07 NL NL7502782A patent/NL7502782A/xx not_active Application Discontinuation
- 1975-03-07 GB GB9483/75A patent/GB1496281A/en not_active Expired
- 1975-03-07 FI FI750672A patent/FI750672A/fi not_active Application Discontinuation
- 1975-03-07 BR BR1361/75A patent/BR7501361A/pt unknown
- 1975-03-07 IL IL46764A patent/IL46764A/xx unknown
- 1975-03-07 PH PH7516884A patent/PH12317A/en unknown
- 1975-03-07 FI FI750670A patent/FI750670A/fi not_active Application Discontinuation
- 1975-03-07 CA CA221,501A patent/CA1030876A/en not_active Expired
- 1975-03-07 NL NL7502785A patent/NL7502785A/xx not_active Application Discontinuation
- 1975-03-07 BR BR1360/75A patent/BR7501360A/pt unknown
- 1975-03-07 NL NL7502784A patent/NL7502784A/xx not_active Application Discontinuation
- 1975-03-07 IL IL46765A patent/IL46765A/en unknown
- 1975-03-07 YU YU00548/75A patent/YU54875A/xx unknown
- 1975-03-07 IL IL46763A patent/IL46763A/xx unknown
- 1975-03-07 AU AU78893/75A patent/AU499270B2/en not_active Expired
- 1975-03-07 DE DE19752510005 patent/DE2510005A1/de not_active Withdrawn
- 1975-03-07 BR BR1358/75A patent/BR7501358A/pt unknown
- 1975-03-07 IT IT7521055A patent/IT1034113B/it active
- 1975-03-07 FI FI750673A patent/FI55560C/fi not_active IP Right Cessation
- 1975-03-07 NL NL7502783A patent/NL7502783A/xx not_active Application Discontinuation
- 1975-03-07 IL IL46766A patent/IL46766A/xx unknown
- 1975-03-07 CA CA221,597A patent/CA1015279A/en not_active Expired
- 1975-03-07 GB GB9489/75A patent/GB1496284A/en not_active Expired
- 1975-03-07 IT IT21054/75A patent/IT1034112B/it active
- 1975-03-08 JP JP50027650A patent/JPS50125109A/ja active Pending
- 1975-03-08 JP JP50027653A patent/JPS50125115A/ja active Pending
- 1975-03-08 ES ES435440A patent/ES435440A1/es not_active Expired
- 1975-03-08 JP JP50027651A patent/JPS50125113A/ja active Pending
- 1975-03-08 JP JP50027652A patent/JPS50125114A/ja active Pending
- 1975-03-08 ES ES435441A patent/ES435441A1/es not_active Expired
- 1975-03-10 IE IE518/75A patent/IE43019B1/en unknown
- 1975-03-10 IE IE517/75A patent/IE43018B1/en unknown
- 1975-03-10 FR FR7507420A patent/FR2263372B1/fr not_active Expired
- 1975-03-10 FR FR757507423A patent/FR2263375B1/fr not_active Expired
- 1975-03-10 AR AR257902A patent/AR219044A1/es active
- 1975-03-10 AR AR257901A patent/AR216423A1/es active
- 1975-03-10 FR FR757507421A patent/FR2263373B1/fr not_active Expired
- 1975-03-10 IE IE519/75A patent/IE43020B1/en unknown
- 1975-03-10 IE IE520/75A patent/IE43021B1/en unknown
- 1975-03-10 FR FR7507422A patent/FR2263374B1/fr not_active Expired
- 1975-03-10 AR AR257899A patent/AR210257A1/es active
- 1975-03-12 IN IN486/CAL/75A patent/IN143592B/en unknown