| 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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| 10/10/1991 | DE4008898A1 Electronic time indicating hands position memory - retains number of forwarding steps if working voltage drops or fails in radio-controlled clock |
| 09/04/1991 | EP0272326B1 Locking construction of timepiece |
| 08/28/1991 | EP0443403A1 Electromagnetic micro-motor for equipping a small clockwork-movement |
| 08/28/1991 | EP0443294A1 Method for feeding a monophase stepping motor |
| 08/20/1991 | US5042017 Rotary pulse switch |
| 08/20/1991 | US5042016 Analog timepiece |
| 08/07/1991 | EP0357633B1 Process for displacing a time-based item of information on a watch dial, and watch equipped to implement this process |
| 08/06/1991 | US5038329 Step motor control mechanism for electronic timepiece |
| 07/17/1991 | CN1013229B Timepiece |
| 07/02/1991 | US5028857 Method of controlling a bi-directional stepping motor and a bi-directional stepping motor adapted to be controlled by this method |
| 06/20/1991 | DE3941301A1 Electronic clock - has signal element indicating minutes which remains inhibited for sixty second period |
| 06/19/1991 | CN2079315U Point needle type quartz alarm watch |
| 06/18/1991 | US5025429 Electric power supply device for hand with load |
| 06/18/1991 | US5025428 Electromagnetic escapement for mechanically driven watch or clock |
| 06/05/1991 | EP0429763A1 Digital capacitive pulse generator |
| 05/28/1991 | US5020039 Watch casing with wrist band switch |
| 05/22/1991 | CN1051628A Electromagnetic driving circuit |
| 05/15/1991 | EP0427566A2 Multifunctional electronic timepiece |
| 05/14/1991 | US5016231 Apparatus for electronically correcting an electronic timepiece |
| 05/08/1991 | CN1012596B Electromagnetic driving circuit |
| 05/08/1991 | CN1012595B Electromagnetic drive circuit |
| 05/08/1991 | CN1012594B Circuit driven by electromagnetic means |
| 05/07/1991 | US5014251 Device producing stopping of a movable element in a determined position and a timepiece having a counting indicator of a finite duration |
| 04/24/1991 | EP0424140A2 Electronic timepiece |
| 04/24/1991 | EP0423586A2 Alarm clock |
| 04/23/1991 | US5010532 Electronic watch having an opening for receiving a battery and a cover closing this opening, and method of mass-producing this watch |
| 04/17/1991 | CN2075356U Electronic quartz clock |
| 04/03/1991 | EP0420796A1 Electronic timepiece |
| 04/03/1991 | CN2074470U Electormagnetic torsion pendulum for decoration |
| 03/20/1991 | CN1050098A Device and method for controlling large tower clock |
| 03/19/1991 | US5001687 Wristwatch with a switching crown |
| 03/06/1991 | EP0415734A2 Analog electric timepiece |
| 02/26/1991 | US4996676 Miniature electric clock |
| 02/20/1991 | CN2071802U Magnetic suspension torsion pendulum mechanism |
| 02/13/1991 | CN2071352U Quartz lock with three calendar |
| 01/23/1991 | CN1048759A Electrcnic timepiece |
| 01/23/1991 | CN1048758A Multifunction electronic watch |
| 01/16/1991 | EP0408512A1 Chronograph wrist-watch |
| 01/16/1991 | CN2069577U Small clamp fixing device of quartz tower clock's motor shaft |
| 01/16/1991 | CN1048608A Electronic watch |
| 01/08/1991 | US4984223 Analog style electronic watch |
| 12/27/1990 | EP0404469A2 Timepiece |
| 12/27/1990 | EP0404468A2 Timepiece |
| 12/27/1990 | EP0404467A2 Timepiece |
| 12/25/1990 | US4979387 Pendulum position detector |
| 12/12/1990 | CN2067423U Supper-thin pendulum type clock |
| 11/28/1990 | CN1047403A Timepiece including at least two motors |
| 11/22/1990 | CA2016332A1 Method for making a timepiece stepping motor |
| 11/20/1990 | US4972393 Calendar display apparatus |
| 11/14/1990 | CN2065773U Single mechanism two-side display quartz clock |
| 11/13/1990 | US4970512 Printed circuit rotary switch with decoder |
| 11/07/1990 | CN1046802A Electronic timepiece with analog display |
| 11/06/1990 | US4969133 Timepiece including at least two motors |
| 10/31/1990 | EP0395298A2 Standing-wave type ultrasonic motor |
| 10/31/1990 | CN2064901U Quartz clock with programming double indication |
| 10/24/1990 | EP0393606A1 Electronic time piece with analog display |
| 10/24/1990 | EP0393605A1 Electronic time piece with at least two motors |
| 10/24/1990 | CN2064515U Pendulum driving devices |
| 10/23/1990 | US4965779 Multi-functional electronic timepiece |
| 10/17/1990 | CN2064076U Multifunction electronic guartz clock |
| 10/09/1990 | US4962469 Exercise measuring instrument |
| 09/26/1990 | EP0388491A1 Electronic information display centre and method of making same |
| 09/18/1990 | WO1990011554A1 Timepiece with speed adjustment for time standard change adaptation |
| 09/18/1990 | CA1274268A1 Bipolar stepping motor rotor and method of manufacture |
| 09/12/1990 | EP0387029A2 Flexible wrist band for a watch |
| 09/12/1990 | EP0386593A1 Means for halting a moving part at a determined position and time piece with an indicator of the count of a fixed time period |
| 09/11/1990 | US4956827 Timepiece |
| 08/22/1990 | EP0383541A2 Calendar display apparatus |
| 08/15/1990 | CN1044715A Three hand movement for a timepiece having stepping motor |
| 08/08/1990 | EP0380928A2 Three hand movement for a timepiece having a stepping motor |
| 07/30/1990 | CA2008543A1 Three hand movement for a timepiece having a stepping motor |
| 07/18/1990 | CN2059516U Sun-moon-earth quartz clock |
| 07/18/1990 | CN2059515U Core for quartz clock |
| 07/12/1990 | WO1990007734A1 A sport glove, in particular a ski glove, bearing a digital chronometer associated therewith |
| 05/31/1990 | DE3926772A1 Raederwerk Raeder work |
| 05/16/1990 | CN2057285U Quartz clock with calender (week) |
| 05/15/1990 | US4926401 Skeleton watch allowing sight of all or some of the elements forming it |
| 05/03/1990 | WO1990004814A1 Event clock with automatic daylight saving adjustment |
| 05/03/1990 | DE3836531A1 Stepper motor controller |
| 05/02/1990 | EP0366422A2 Electronic timepiece |
| 05/02/1990 | EP0365781A2 Stepping motor rotor assembly for an electronic timepiece |
| 04/25/1990 | EP0364602A1 Pointer type display |
| 04/24/1990 | US4920494 Fuel monitoring arrangement for automotive internal combustion engine control system |
| 04/24/1990 | US4920238 Self-centering switch |
| 04/18/1990 | CN1007663B World timepiece |
| 04/11/1990 | EP0362390A1 Display using pointer |
| 04/10/1990 | US4916676 Electronic timepiece |
| 04/04/1990 | EP0361209A1 Process and device for detecting the instant a rotor of a stepper motor passes a predetermined position, and process for controlling this motor |
| 04/04/1990 | EP0361015A2 High rate, bidirectional drive for a bipole stepping motor watch |
| 04/04/1990 | EP0361013A2 Universal stepping motor gear, train module for a wrist instrument |
| 04/03/1990 | US4912832 Method for making a timepiece stepping motor |
| 03/28/1990 | EP0360140A1 Skeleton watch showing the whole mechanism or a part of the same |
| 03/27/1990 | US4912692 High rate, bidirectional drive for a bipole stepping motor watch |
| 03/27/1990 | US4912690 Timepiece movement |
| 03/27/1990 | US4912689 Compensating circuitry for an electronic watch |
| 03/27/1990 | US4912687 Time of tip-over indicator |
| 03/14/1990 | EP0357633A1 Process for displacing a time-based item of information on a watch dial, and watch equipped to implement this process. |
| 03/13/1990 | US4908808 Timepiece having a multipolar rotor |
| 03/07/1990 | CN1040274A Multifunctional electronic watch |
| 03/06/1990 | US4907210 Train wheel of electronic timepiece |