| 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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| 03/24/1987 | US4652141 Time apparatus |
| 03/24/1987 | US4652140 Multi alarm timepiece |
| 03/18/1987 | EP0097168B1 Clock and watch module comprising an electronic circuit and a calender device |
| 03/17/1987 | US4650344 Radio controlled timepiece |
| 03/03/1987 | US4647218 Small stepping motor driven watch |
| 02/24/1987 | US4645357 Electroptical detector for determining the position of the time display mechanism of a timepiece |
| 02/19/1987 | DE3528888A1 Sliding contact arrangement for inputting setting values into electronic controls |
| 02/10/1987 | US4641975 Clock with mechanical drive |
| 02/10/1987 | CA1217642A Timing device |
| 12/30/1986 | US4633156 Stepping motor assembly |
| 12/23/1986 | US4630936 Electronic timepiece |
| 12/09/1986 | US4627736 Thin card-type electronic apparatus |
| 12/03/1986 | EP0203338A2 Driving circuit for a step motor |
| 12/03/1986 | EP0203330A1 Electronic time piece with a detector of the end of the life span of the battery |
| 12/02/1986 | US4626760 Control circuit for a stepping motor |
| 11/26/1986 | EP0202495A1 Timer |
| 11/25/1986 | US4624580 Twisting pendulum operating apparatus |
| 11/25/1986 | US4624579 In-the-wall clock |
| 11/18/1986 | US4623261 Electronic timepiece with a chronograph system |
| 11/18/1986 | US4623260 Electronic timepiece with a chronograph system |
| 10/22/1986 | EP0198576A2 Input device for an electronic timepiece |
| 10/21/1986 | US4618264 Acoustic alarm setting device for a timepiece |
| 09/24/1986 | EP0195596A2 Electronic analogue display |
| 09/17/1986 | EP0194448A2 Clock with a mechanical drive |
| 09/10/1986 | EP0194136A2 Electronic timepiece with a solar cell |
| 08/13/1986 | EP0190591A1 Motor assembly capable of functioning at a high speed |
| 08/12/1986 | US4605311 Electronic watch having a stepping motor |
| 07/15/1986 | US4600316 Watch having an analog and digital display |
| 07/08/1986 | US4599005 Step motor control mechanism for electronic timepiece |
| 07/01/1986 | US4597673 Analogue type timer |
| 05/28/1986 | EP0182490A1 Improvements in or relating to stepping motor driven electronic timepieces |
| 05/28/1986 | EP0182249A2 Time indicating apparatus |
| 05/20/1986 | US4590412 Method of energizing a stepping motor |
| 05/14/1986 | EP0180880A2 Display detection device for a watch, in particular a radio watch |
| 05/13/1986 | US4588305 Electronic chronograph watch having analog and digital display of measured time periods |
| 05/07/1986 | EP0180155A2 Radio-controlled watch |
| 05/06/1986 | US4586827 Information system |
| 04/09/1986 | EP0177440A1 Electronic pocket or wrist watch incorporating a stepping motor |
| 02/19/1986 | EP0171635A1 Method and apparatus to recognise the position of the rotor of a stepping motor |
| 02/04/1986 | US4568867 Method for reducing the consumption of a stepping motor and device for carrying out the method |
| 01/21/1986 | US4565955 Synchronous motor device for timepiece |
| 01/07/1986 | US4563604 Electromagnetic stepping motor with two coupled rotors |
| 12/10/1985 | US4558268 Control device for two bidirectional step motors |
| 11/26/1985 | US4555184 Module for combination timepiece |
| 11/21/1985 | EP0161582A1 Stepping motor assembly |
| 11/21/1985 | EP0161438A1 Time piece comprising at least a chronograph function |
| 11/19/1985 | US4553851 Timepiece operated by solar cells |
| 11/12/1985 | US4552464 Analogue dial calculator/wrist watch |
| 11/05/1985 | US4551665 Method of and a device for controlling a stepping motor |
| 10/29/1985 | US4550279 Step-by-step motor unit |
| 09/25/1985 | EP0155661A1 Control circuit for a stepping motor |
| 09/18/1985 | EP0154889A1 Constant-power supply means for a stepping motor fed by a variable-tension source |
| 09/17/1985 | US4542329 Energizing method for a single phase timepiece stepping motor |
| 09/11/1985 | EP0153934A1 Interlocking device for stepping motor |
| 09/10/1985 | US4540291 Timepiece mechanism |
| 08/27/1985 | US4537514 Multi-function analog display stopwatch |
| 08/20/1985 | US4536095 Crown setting switch for a wristwatch |
| 08/20/1985 | US4536093 Electronic timepiece with system for synchronizing hands |
| 08/06/1985 | US4533257 Analog electric timepiece |
| 07/23/1985 | CA1190754A1 Planetary gear for date mechanism in a wristwatch |
| 07/17/1985 | EP0148414A2 Clockwork-movement including a plurality of motors and an electronic time base |
| 07/02/1985 | US4526476 Correction system for hands display type of electronic timepiece |
| 07/02/1985 | US4526475 Analog display electronic timepiece with multi-speed hand movement |
| 06/18/1985 | US4523857 Multi-function analog electronic timepiece |
| 06/11/1985 | US4522507 Step motor control mechanism for electronic timepiece |
| 06/11/1985 | US4522506 Time signal clock |
| 06/05/1985 | EP0143279A1 Watch with analogous and numerical display |
| 06/05/1985 | EP0143227A1 Electro-magnetic stepping motor with two coupled rotors |
| 05/28/1985 | US4520072 Dissolving a coloring substance in solvent and absorption on carrier |
| 05/21/1985 | US4518906 Driving device of stepping motor |
| 05/14/1985 | US4516863 Electronic timepiece operable in continuous and stepwise modes |
| 05/08/1985 | EP0140089A1 Process for feeding a stepping motor |
| 05/07/1985 | US4516064 Stepper motor control device |
| 04/30/1985 | US4514676 Method and device for controlling a bidirectional stepping motor |
| 04/17/1985 | EP0137093A2 Method of measuring the voltage induced in the coil of a stepping motor by the rotation of its rotor |
| 04/16/1985 | US4511260 Improved quartz watch having a semi-rigid watch case bottom and a time setting system using an electrical contact |
| 04/09/1985 | US4509867 Electronic timepiece movement |
| 04/02/1985 | US4508458 Electric clock movement, particularly a quartz clock movement |
| 03/27/1985 | EP0135104A1 Method and device for the control of a stepping motor |
| 03/26/1985 | US4507599 Method and device for controlling a stepping motor |
| 03/19/1985 | US4505594 Multi-function analogue type watch |
| 03/14/1985 | WO1985001130A1 Interlocking device for stepping motor |
| 01/29/1985 | US4496246 Timepiece construction |
| 01/23/1985 | EP0131760A1 Control apparatus for two bidirectional step motors |
| 01/17/1985 | WO1985000230A1 Electronic chronograph, particularly analog electronic chronograph-watch, chronometered time counter |
| 01/15/1985 | US4493559 Analogue alarm electronic timepiece |
| 01/08/1985 | US4492910 For controlling/regulating rotational speed of a motor |
| 01/08/1985 | US4492905 Intermittent drive arrangement |
| 01/08/1985 | US4492479 Small electronic timers |
| 01/02/1985 | EP0130150A1 Electronic chronograph, especially in a watch |
| 01/01/1985 | US4491424 Electronic analog timepiece with rotation detection circuit |
| 12/18/1984 | US4488819 Electronic watch movement with modular stepper motor and setting mechanism |
| 12/18/1984 | US4488818 Watch with an analog display device the dial of which is formed by a liquid crystal display cell |
| 12/12/1984 | EP0127651A1 Quartz watch with monobloc case, without press-button or crown on the outside |
| 12/05/1984 | EP0127112A1 Motor unit functioning step by step |
| 11/20/1984 | US4484123 Method and apparatus for controlling and regulating a motor with a permanent magnetic rotor |
| 11/20/1984 | US4483627 Electronic timepiece |
| 11/14/1984 | EP0124853A1 Electronic timepiece with analogous display |
| 11/14/1984 | EP0124550A1 Watch-case with press-buttons |
| 11/13/1984 | US4482260 Electromechanical clock |