| Patents for G04G 3 - Producing timing pulses (901) |
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| 05/05/1992 | US5111487 Electronic timer apparatus |
| 04/15/1992 | CN2101900U Step mechanism for movement of quartz clock |
| 04/01/1992 | EP0477806A2 Method and apparatus for producing an accurate time base |
| 04/01/1992 | CN2100657U New-type integrated circuit digital clock |
| 01/01/1992 | CN2092113U Time signaling clock giving chinese pronunciation |
| 01/01/1992 | CN2092112U Multifunctional large-screen electronic calender |
| 12/18/1991 | EP0461557A2 Time scale computation system including complete and weighted ensemble definition |
| 09/17/1991 | US5050113 Low power timekeeping system |
| 08/08/1991 | WO1991011763A1 Device and method for providing accurate time and/or frequency |
| 07/16/1991 | CA1286413C Method and apparatus for a constant frequency clock source in phase with a variable frequency system clock |
| 06/11/1991 | US5023850 Animal time |
| 05/15/1991 | EP0427077A1 Electronic timepiece |
| 04/23/1991 | US5010331 Time-key integrated circuit |
| 03/20/1991 | CN1050098A Device and method for controlling large tower clock |
| 01/23/1991 | CN2070011U Digital group sunchronisation timing device |
| 10/31/1990 | EP0394654A2 Time switch |
| 10/16/1990 | US4964072 Electronic device with calendar function |
| 07/18/1990 | CN1008835B Method of phase-opening time counting and its equipments |
| 07/17/1990 | US4942522 Timer channel with multiple timer reference features |
| 06/28/1990 | WO1990007147A1 Clock synchronization |
| 06/12/1990 | US4933920 Sidereal clock |
| 05/23/1990 | EP0292502B1 Method and apparatus for a constant frequency clock source in phase with a variable frequency system clock |
| 05/15/1990 | US4926319 Integrated circuit timer with multiple channels and dedicated service processor |
| 02/28/1990 | EP0355463A2 Timer channel with multiple timer reference features |
| 02/28/1990 | EP0355363A2 Integrated circuit timer with multiple channels and dedicated service processor |
| 02/20/1990 | US4903251 Accuracy adjustment for time-of-day clock using a microcontroller |
| 01/30/1990 | US4897860 Programmable time base circuit with protected internal calibration |
| 10/25/1989 | CN2046644U Digital display electronic clock |
| 08/08/1989 | US4855615 Switching circuit avoiding glitches at the instant of switch-over between two clock signals |
| 07/04/1989 | US4845692 Clocking device of substantially constant stability for short-term and long-term time measurement |
| 03/29/1989 | EP0308571A2 Data accumulator and transponder |
| 03/15/1989 | EP0306821A1 Electronic device with calendar function |
| 02/22/1989 | EP0303916A2 Clock current supply |
| 02/16/1989 | DE3726277A1 Electronic time (horological) standard |
| 02/08/1989 | CN2032339U Multifunctional circulateable timed controller |
| 01/31/1989 | US4801875 Integrated circuit with frequency dividing test function |
| 01/11/1989 | CN2030739U Wireless remote control digital-display timer for water polo and basketball |
| 11/29/1988 | US4788670 Clock voltage supply |
| 11/02/1988 | EP0289385A1 Reference time device with a constant stability for measuring long and short time intervals |
| 10/18/1988 | US4779248 Electronic timepiece |
| 08/09/1988 | US4763309 Programming arrangement for a non-volatile memory for a timepiece |
| 08/09/1988 | US4763193 Automatic determination of time base in electronic time-keeping apparatus |
| 08/02/1988 | US4761771 Electronic timekeeping apparatus with temperature compensation and method for compensating same |
| 07/20/1988 | CN85108362A Method of phase-opening time counting and its equipments |
| 06/23/1988 | DE3643947A1 Circuit arrangement for the digital calibration of radio-frequency oscillators |
| 05/31/1988 | US4748644 Timing apparatus for use in a data processing unit |
| 04/20/1988 | CN86210925U Electronic flashing and timing timer |
| 04/19/1988 | US4738268 For measuring and recording intrauterine pressure |
| 04/12/1988 | US4737944 Electronic timepiece |
| 01/27/1988 | EP0254406A2 Switching circuit for clock signals |
| 01/20/1988 | EP0253227A1 Device for programming a non volatile memory of a time piece |
| 11/17/1987 | US4707145 Electronic timepiece |
| 10/14/1987 | EP0241266A2 Electronic watch |
| 10/14/1987 | EP0241253A2 Electronic timepiece |
| 09/08/1987 | US4692583 Surface heat treating apparatus |
| 08/13/1987 | WO1987004813A1 Method and apparatus for a constant frequency clock source in phase with a variable frequency system clock |
| 06/09/1987 | US4672642 Circuit for generating a clock signal at an AC line frequency |
| 04/14/1987 | CA1220530A1 Real time clock synchronization |
| 03/26/1987 | DE3632637A1 Time-interval computing device |
| 03/11/1987 | EP0213471A2 Surface heat treating apparatus |
| 10/29/1986 | CN85103623A Programmable time controller |
| 10/21/1986 | US4618837 Low-power consumption reference pulse generator |
| 10/21/1986 | US4618265 Hexidecimal clock, and methods of constructing and utilizing same |
| 10/15/1986 | CN85201018U 14400 hour timer |
| 10/07/1986 | US4615625 Analog electronic timepiece |
| 07/16/1986 | EP0187310A2 Real time clock synchronization |
| 05/14/1986 | CN85202773U Multi-functional time control device with digital |
| 04/22/1986 | US4583865 Real time clock synchronization |
| 01/07/1986 | US4563748 Temperature measuring system |
| 11/19/1985 | US4553850 Logical regulation circuit for an electronic timepiece |
| 08/27/1985 | US4537515 Resonator temperature compensated time base and watch using said time base |
| 08/13/1985 | CA1191922A1 Data accumulator and transponder with power back-up for time of day clock |
| 03/05/1985 | US4502790 Electronic timepiece |
| 01/22/1985 | US4495596 Treating coffee particulates with a coffee aroma enriched carrie oil |
| 12/27/1984 | CA1180060A Programmable clock rate generator |
| 11/07/1984 | EP0123791A2 High resolution time generator |
| 10/30/1984 | US4480198 Device for increasing the operational security of a duplicated clock |
| 10/02/1984 | US4475180 Non-volatile memory circuit for portable electronic devices |
| 08/07/1984 | US4464061 Linearizer circuit and an electronic watch incorporating same |
| 07/24/1984 | US4461582 Circuit arrangement for adjusting a pulse frequency of a quartz-controlled watch or clock |
| 06/26/1984 | US4456386 Timepiece having a divider chain with an adjustable division rate |
| 06/12/1984 | US4453834 Electronic timepiece with temperature compensation |
| 04/10/1984 | US4441826 Electronic timepiece |
| 04/10/1984 | US4441825 Low-power integrated circuit for an electronic timepiece |
| 03/07/1984 | EP0101788A2 Accumulator and transponder for time related data |
| 02/28/1984 | US4433920 Electronic timepiece having improved primary frequency divider response characteristics |
| 02/07/1984 | US4430008 Quartz oscillation-type electronic timepiece |
| 01/25/1984 | EP0099191A2 Temperature stable interval timer |
| 01/24/1984 | US4427952 Oscillator circuit with digital temperature compensation |
| 01/24/1984 | US4427302 Timekeeping signal source for an electronic timepiece |
| 12/06/1983 | US4419017 Electronic clock |
| 11/15/1983 | US4415870 Oscillator circuit with digital temperature compensation |
| 11/01/1983 | US4413350 Programmable clock rate generator |
| 10/11/1983 | US4408897 Electronic timepiece having a digital frequency correction circuit |
| 10/04/1983 | US4407589 Error correction method and apparatus for electronic timepieces |
| 09/28/1983 | EP0089799A1 Logic regulation circuit for an electronic timepiece |
| 09/27/1983 | US4407019 Electronic wristwatch |
| 09/06/1983 | CA1153472A1 Time of day clock control |
| 08/23/1983 | US4400093 Method for inspecting the running of a timepiece and timepiece adapted for such method |
| 08/16/1983 | US4398833 Electronic timepiece |