| Patents for G04C 3 - Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means (4,122) |
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| 10/18/1988 | US4779247 World clock |
| 10/12/1988 | EP0285881A1 Electronic analogous watch indicating the day and the date |
| 10/04/1988 | US4775963 Analog watch having two motors and comprising means for perpetually indicating the day of the month |
| 09/28/1988 | EP0283760A1 Device for detecting the passage of a moving organ in a reference position |
| 09/28/1988 | CN88101201A 电磁驱动电路 Electromagnetic drive circuit |
| 09/27/1988 | CA1242329A1 Acoustic alarm setting device for a timepiece |
| 09/27/1988 | CA1242328A1 Small stepping motor driven watch |
| 09/21/1988 | CN88101701A Circuit driven by electromagnetic means |
| 09/20/1988 | US4773051 Circuit for shaping a signal produced by a contact |
| 09/20/1988 | US4772840 Method and arrangement for controlling a stepping motor |
| 09/13/1988 | US4771409 For a heating and/or cooling programmer |
| 09/07/1988 | CN88101524A Electromagnetic driving circuit |
| 09/07/1988 | CN86206494U Transparent rotary dial type big quartz clock with four side displays |
| 08/18/1988 | DE3703477A1 Time switch for electrical appliances - has hinged cover in mechanical contact with manual override switch when closed |
| 08/09/1988 | US4763309 Programming arrangement for a non-volatile memory for a timepiece |
| 07/26/1988 | US4760564 Analog electronic timepiece with charging function |
| 07/19/1988 | US4759004 Mechanism for automatic winding of a clock |
| 07/13/1988 | EP0274035A1 Circuit for shaping the signal produced by a contact |
| 07/13/1988 | CN87105648A Bipolar stepping motor rotor with drive pinion and method of manufacture |
| 07/12/1988 | US4757483 Analog clock |
| 06/29/1988 | EP0272326A1 Locking construction of timepiece |
| 06/29/1988 | CN86209579U Quartz mechanical time signal clock |
| 06/28/1988 | US4754210 Method of and a device for controlling a stepping motor |
| 05/31/1988 | US4748603 Chronograph watch |
| 05/18/1988 | EP0267440A1 Analogous clock with two motors having a perpetual day counter |
| 05/10/1988 | US4744068 Timepiece setting arrangement including a safety lock |
| 05/10/1988 | US4744067 Analog electronic watch |
| 05/10/1988 | US4744066 Quartz analog movement with lavet stepping motor and large energy cell |
| 04/26/1988 | US4740936 Alarm on-off mechanism for alarm watch |
| 04/26/1988 | US4740933 Flexible band with electrical circuit for a time piece |
| 04/21/1988 | DE3734151A1 Electronic timepiece having a perennial calendar |
| 04/12/1988 | US4737943 Friction coupling for clockworks |
| 04/12/1988 | US4737941 Watch with hand in form of circular film and provided with electrostatic shielding device |
| 03/22/1988 | US4733384 Perpetual calendar watch having two motors |
| 03/02/1988 | EP0257196A2 Bipolar stepping motor rotor with drive pinion and method of manufacture |
| 02/23/1988 | US4727526 Alarm on-off mechanism for alarm watch |
| 02/23/1988 | US4726687 Analog timepiece with device for electronic data input |
| 02/18/1988 | DE3627791A1 Circuit arrangement for an electrically adjustable, analog, quartz-controlled watch |
| 02/11/1988 | WO1988001071A1 Electronic clockwork with hand display |
| 02/10/1988 | EP0255712A1 Works for electronic watch provided with hands for the display |
| 02/03/1988 | CN87208008U Electronic pendulum with multiple magnetic poles |
| 01/28/1988 | WO1988000727A1 Locking construction of timepiece |
| 01/27/1988 | CN86108641A Backing plate for electromechanical clock |
| 01/20/1988 | EP0253227A1 Device for programming a non volatile memory of a time piece |
| 01/20/1988 | EP0253225A2 Method for mounting components on a conductor network for the circuit support of an electro-mechanic watch movement and partially equipped conductor network of a clock-circuit support |
| 01/20/1988 | EP0253153A1 Method and device for controlling a stepping motor |
| 01/19/1988 | US4720823 Push-pull, stem-controlled digital time displays |
| 01/12/1988 | US4719368 Power supply control arrangement for a watch stepping motor |
| 01/07/1988 | EP0251851A1 Manual setting device and its use in a multiple-function clockwork movement |
| 01/07/1988 | EP0250862A1 Method and device for controlling a stepper motor |
| 12/30/1987 | CN87104335A Analog electronic timepiece with multifunction |
| 12/30/1987 | CN87104334A World timepiece |
| 12/29/1987 | US4715725 Step motor control mechanism for electronic timepiece |
| 12/23/1987 | EP0250232A2 World timepiece |
| 12/23/1987 | EP0250142A2 Electronic timepiece |
| 12/15/1987 | US4712926 Electronic timepiece |
| 12/08/1987 | US4711584 Movement of electronic watch of analog display type |
| 12/02/1987 | EP0247520A1 Chronograph clock |
| 12/02/1987 | EP0247438A1 Correcting device for a time piece with a safety lock |
| 12/02/1987 | EP0247418A1 Perpetual calender clock with two motors |
| 11/19/1987 | EP0245974A2 Watch with hand in form of circular film and provided with electrostatic shielding device |
| 11/17/1987 | US4707144 Table clock |
| 11/17/1987 | US4707143 Device for driving twist pendulums |
| 10/28/1987 | EP0243140A2 Electronic timepiece |
| 10/27/1987 | US4702613 Electronic timepiece driven by a plurality of stepping motors and powered by a solar cell |
| 10/22/1987 | DE3613232A1 Driving device for a torsion pendulum, oscillating to and fro without an escapement-regulating function, of a clock |
| 10/14/1987 | EP0241202A2 Analog electronic timepiece with charging function |
| 10/14/1987 | EP0240778A1 Push button mechanism for a time piece |
| 10/13/1987 | US4700091 Bipolar stepping motor rotor with drive pinion and method of manufacture |
| 10/07/1987 | EP0239820A1 Mechanical-to-electrical energy converter |
| 09/22/1987 | US4695168 Electronic watch having two motors and comprising means for perpetually indicating the day of the month |
| 09/01/1987 | US4690568 Battery lifetime indicator for a stopwatch |
| 08/25/1987 | US4688948 Electronic analogue timepiece of DC magnetic field detection type |
| 08/18/1987 | US4687341 Timer |
| 08/12/1987 | EP0231451A1 Electronic clock with two motors and provided with a perpetual calender |
| 08/04/1987 | US4684263 Magnetic brake for timepiece |
| 08/04/1987 | US4684262 Electronic timepiece with analog display comprising a seconds indicator member |
| 07/28/1987 | US4683428 Method of and a device for identifying the position of the rotor of a stepping motor |
| 07/21/1987 | US4681464 Timepiece movement including a plurality of stepping motors and an electronic time base |
| 07/21/1987 | US4681461 Electronic watch with operating controls in the back cover of the case |
| 07/14/1987 | US4679944 Electric watch |
| 07/07/1987 | US4678346 Stepping motor for a clock |
| 07/07/1987 | US4678344 Electronic timepiece |
| 06/16/1987 | US4673857 Method for driving a turn detector circuit which detects the turn of a step motor |
| 06/10/1987 | EP0225277A1 Electric contact device for clocks |
| 06/03/1987 | EP0224030A1 Electronic watch with a control system in the bottom of the case |
| 05/19/1987 | US4667140 Battery powered motor drive with temperature-responsive battery heater |
| 05/19/1987 | US4666311 Electronic timepiece with analogue display |
| 05/13/1987 | EP0221648A1 Electronic analog timepiece with DC magnetic field detector |
| 05/13/1987 | EP0221363A1 Analogous electronic watch |
| 04/21/1987 | CA1220817A1 Method of analysing the voltage induced in an exciter coil of a stepping motor |
| 04/21/1987 | CA1220635A1 Crown setting switch for solid state analog watch |
| 04/14/1987 | US4657405 Stop watch capable of indicating a plurality of split times |
| 04/08/1987 | EP0217251A1 Magnetic backlash eliminator for a time piece |
| 04/08/1987 | EP0217164A1 Electronic timepiece with an analogous display having a seconds indicating organ |
| 04/08/1987 | EP0217008A1 Acoustic alarm setting device for a timepiece |
| 04/07/1987 | US4655606 Timepiece comprising at least one chronograph function |
| 04/01/1987 | EP0216171A1 Multi alarm timepiece |
| 04/01/1987 | EP0216018A1 Small stepping motor driven time piece |
| 03/25/1987 | EP0215345A1 Stop watch capable of indicating a plurality of split times |