CH1548471A4 - - Google Patents
Info
- Publication number
- CH1548471A4 CH1548471A4 CH1548471D CH1548471DD CH1548471A4 CH 1548471 A4 CH1548471 A4 CH 1548471A4 CH 1548471 D CH1548471 D CH 1548471D CH 1548471D D CH1548471D D CH 1548471DD CH 1548471 A4 CH1548471 A4 CH 1548471A4
- Authority
- CH
- Switzerland
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
- G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1548471A CH556051A (en) | 1971-10-25 | 1971-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH1548471A4 true CH1548471A4 (en) | 1974-03-15 |
Family
ID=4409461
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1548471D CH1548471A4 (en) | 1971-10-25 | 1971-10-25 | |
| CH1548471A CH556051A (en) | 1971-10-25 | 1971-10-25 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1548471A CH556051A (en) | 1971-10-25 | 1971-10-25 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3789599A (en) |
| JP (1) | JPS4858877A (en) |
| CH (2) | CH1548471A4 (en) |
| GB (1) | GB1400730A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1450072A (en) * | 1972-10-02 | 1976-09-22 | Citizen Watch Co Ltd | Electronic timepiece |
| ES430659A1 (en) * | 1973-10-24 | 1976-11-01 | Jauch | Method and apparatus for synchronizing andoscillating system which is driven by an energy storage device |
| GB1488914A (en) * | 1973-12-19 | 1977-10-19 | Citizen Watch Co Ltd | Electronic timepiece |
| JPS5651590B2 (en) * | 1974-09-24 | 1981-12-07 | ||
| CN101976035B (en) * | 2010-10-14 | 2012-10-03 | 烟台持久钟表集团有限公司 | Clock hand position detection device and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1928793A (en) * | 1930-09-29 | 1933-10-03 | Arthur F Poole | System and method for indicating time |
| CH205066A4 (en) * | 1966-02-10 | 1969-08-15 | ||
| US3451210A (en) * | 1966-07-01 | 1969-06-24 | Benrus Corp | System for maintaining oscillations in an electric timing mechanism having an oscillatory element |
| CH468664A (en) * | 1966-12-13 | 1969-03-31 | Centre Electron Horloger | Electronic clock |
| US3609957A (en) * | 1969-03-27 | 1971-10-05 | Gen Time Corp | Drive arrangement for timekeeping system |
-
1971
- 1971-10-25 CH CH1548471D patent/CH1548471A4/xx unknown
- 1971-10-25 CH CH1548471A patent/CH556051A/xx unknown
-
1972
- 1972-10-20 US US00299327A patent/US3789599A/en not_active Expired - Lifetime
- 1972-10-25 JP JP47106325A patent/JPS4858877A/ja active Pending
- 1972-10-25 GB GB4928872A patent/GB1400730A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4858877A (en) | 1973-08-17 |
| CH556051A (en) | 1974-11-15 |
| US3789599A (en) | 1974-02-05 |
| GB1400730A (en) | 1975-07-23 |