| Patents for G04G 19 - Electric power supply circuits specially adapted for use in electronic time-pieces (1,255) |
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| 08/27/1987 | DE3605543A1 Circuit arrangement for limiting the supply voltage of a clock circuit |
| 08/12/1987 | EP0231451A1 Electronic clock with two motors and provided with a perpetual calender |
| 05/13/1987 | EP0221363A1 Analogous electronic watch |
| 04/07/1987 | US4656574 Logic signal multiplier circuit |
| 03/31/1987 | US4653931 Self-charging electronic timepiece |
| 01/06/1987 | US4634288 Auxiliary timing source for ac-powered electronic clocks |
| 11/05/1986 | EP0083336B1 Electronic apparatus |
| 10/21/1986 | US4618837 Low-power consumption reference pulse generator |
| 10/07/1986 | US4616167 Electronic apparatus |
| 10/07/1986 | US4615625 Analog electronic timepiece |
| 07/22/1986 | US4602165 Switch assembly for maintaining an electric time switch clock synchronized with real time |
| 12/10/1985 | US4557606 Power line-operated electronic time-clock |
| 11/05/1985 | US4551028 Disposable electronic watch |
| 09/24/1985 | CA1194125A1 Power outage timer |
| 07/16/1985 | US4529322 Booster circuit for electronic watch elements |
| 05/07/1985 | US4516120 Display device |
| 02/05/1985 | US4498040 Reference voltage circuit |
| 08/14/1984 | US4466074 Power outage timer |
| 05/15/1984 | US4448543 Time-of-day clock having a temperature compensated low power frequency source |
| 04/17/1984 | US4443115 Electronic timepiece with electrochromic display |
| 04/10/1984 | US4441825 Low-power integrated circuit for an electronic timepiece |
| 03/27/1984 | CA1164226A1 D-c voltage converter |
| 03/06/1984 | US4435089 Power circuit for an electronic timepiece |
| 03/06/1984 | US4435088 Battery switch plate for a timepiece |
| 02/28/1984 | US4433920 Electronic timepiece having improved primary frequency divider response characteristics |
| 02/21/1984 | US4433371 Converter for converting an a.c. voltage into a direct current and an oscillator circuit using said converter |
| 02/07/1984 | US4430008 Quartz oscillation-type electronic timepiece |
| 01/24/1984 | US4428040 Low power consumption electronic circuit |
| 12/06/1983 | US4419017 Electronic clock |
| 11/22/1983 | US4417263 Semiconductor device |
| 09/13/1983 | US4404624 Power circuit for electronic timepiece |
| 08/09/1983 | US4397564 Electronic timepiece |
| 08/09/1983 | US4397563 Power circuit for electronic wristwatch |
| 07/26/1983 | US4395138 Electronic timepiece |
| 07/26/1983 | US4395135 Optional alarm and battery backup system for a talking timepiece |
| 07/13/1983 | EP0083336A1 Electronic apparatus. |
| 06/21/1983 | US4389704 Power source supply system |
| 06/14/1983 | US4388001 Electronic timepiece |
| 06/07/1983 | US4387350 Watch circuit with oscillator gain control |
| 03/22/1983 | US4377781 Selectively adjustable voltage detection integrated circuit |
| 02/15/1983 | US4374332 Cascade type CMOS semiconductor device |
| 02/01/1983 | US4371269 D-C Voltage converter for a wristwatch |
| 01/20/1983 | WO1983000237A1 Electronic apparatus |
| 01/04/1983 | CA1138655A1 Energy system for electronic watch |
| 11/30/1982 | US4361409 Electronic watch having braked stepping motor |
| 11/09/1982 | US4358728 Voltage control circuit responsive to FET propagation time |
| 09/28/1982 | US4352169 Electronic timepiece |
| 09/21/1982 | US4351042 Timepiece including a storage arrangement |
| 08/24/1982 | US4346350 FET Quartz oscillators |
| 08/17/1982 | US4345286 Power supply device for a multifunction apparatus having a plurality of power sources |
| 06/01/1982 | US4333171 Electronic timepiece with diffusion resistor for compensating threshold variations |
| 05/04/1982 | US4328572 Voltage control system for electronic timepiece |
| 05/04/1982 | US4328571 Rapid start oscillator latch |
| 05/04/1982 | US4328570 Electronic timepiece with illumination lamp battery voltage drop compensation circuit |
| 04/28/1982 | EP0050583A1 Alternating voltage to direct current converter and oscillator circuit comprising said converter |
| 04/20/1982 | US4326277 Electronic timepiece |
| 03/16/1982 | US4320477 Energy system for electronic watch |
| 02/16/1982 | US4316246 Battery switching apparatus included within a timer adapter unit |
| 01/19/1982 | US4312058 Electronic watch |
| 01/19/1982 | US4311953 Charger using one or more solar batteries |
| 01/19/1982 | US4311923 Device for regulating the threshold voltages of I.G.F.E.T. transistors circuitry |
| 12/29/1981 | US4308609 Power supply device with voltage dropping means |
| 12/01/1981 | US4303997 Analog alarm timepiece |
| 09/22/1981 | US4291369 Voltage multiplier and driver circuit |
| 06/16/1981 | CA1103043A1 Electronic timepiece having shelf-life battery conservation latch |
| 05/19/1981 | US4268913 Electronic calculator watch |
| 05/13/1981 | EP0028414A1 Timepiece comprising a storage device |
| 05/06/1981 | EP0028131A1 Electro-mechanical elapsed time recorder |
| 04/14/1981 | US4262350 Solid state electronic timepiece with lamp |
| 03/31/1981 | US4259715 Voltage conversion system for electronic timepiece |
| 03/24/1981 | US4258310 Selectively adjustable voltage detection integrated circuit |
| 03/24/1981 | US4258275 Miniature electronic device |
| 02/24/1981 | CA1096502A1 Interactive wristwatch calculator |
| 12/16/1980 | US4240150 Portable timepiece calculator with power savings feature |
| 10/21/1980 | US4229668 Transistor circuit having a plurality of CMOS circuits |
| 10/14/1980 | US4228422 System for displaying at a remote station data generated at a central station and for powering the remote station from the central station |
| 10/07/1980 | US4226081 Electronic timepiece |
| 09/09/1980 | US4221111 Electronic timepiece having a voltage conversion circuit |
| 08/12/1980 | US4217540 Voltage regulated electronic timepiece |
| 07/29/1980 | US4214434 Electronic watches |
| 07/15/1980 | US4212157 Solid state clock |
| 07/15/1980 | CA1081477A1 Wrist watch incorporating a thermoelectric generator |
| 07/01/1980 | US4209972 Digital electronic timepiece having an alarm display |
| 06/24/1980 | US4208869 Illumination device for electronic timepiece |
| 06/03/1980 | US4205518 Voltage conversion system for electronic timepiece |
| 06/03/1980 | CA1078964A1 Interactive wristwatch calculator |
| 05/06/1980 | US4201039 Numerical display using plural light sources and having a reduced and substantially constant current requirement |
| 05/06/1980 | CA1076840A1 Automatic on/off digitally timed electronic switch |
| 02/26/1980 | US4189909 Integrated injection logic electronic system with voltage regulator for multiplexed liquid crystal display |
| 01/22/1980 | US4184318 Time indicating device for electronic digital type car clocks |
| 01/08/1980 | US4182110 Electronic wristwatch including auxiliary power supply |
| 12/25/1979 | US4179876 Digital clock for motor vehicles |
| 12/11/1979 | US4177632 Electronic watch |
| 11/27/1979 | US4175377 Timepiece with display device for warning battery life |
| 11/20/1979 | CA1066513A1 Ac driven clock timing device with auxiliary dc backup |
| 11/13/1979 | US4173862 Booster circuit for electronic timepiece |
| 08/14/1979 | CA1060543A1 Boosting circuit |
| 06/19/1979 | US4158285 Interactive wristwatch calculator |
| 03/27/1979 | US4145872 Electronic watch |
| 03/20/1979 | US4144704 Safety device for battery-operated watches |