| Patents for G04C 19 - Producing optical time signals at prefixed times by electric means (241) |
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| 12/11/2003 | WO2003102702A2 Watch with hidden compartment |
| 11/19/2003 | CN2586994Y Alarm clock structure |
| 06/18/2003 | CN1424705A Luminous display device and electronic apparatus of luminous element |
| 06/05/2003 | US20030103418 Light-emitting display device using light-emitting element and electronic apparatus |
| 05/28/2003 | CN2553405Y Multifunction alarm clock |
| 09/19/2002 | WO2002073321A1 Method for presentation of information, device for carrying out said method and an indicator of such device |
| 08/29/2002 | WO2002067135A2 Time studies chronometer with generic activity descriptions |
| 06/12/2002 | CN1353827A Electronic timepiece with indicator hands |
| 05/29/2002 | CN2493957Y Multi-function timing luminous clock |
| 03/06/2002 | EP1184748A1 Electronic timepiece with indicator hands |
| 03/06/2002 | CN2480881Y Clock capable of sensing electromagnetic wave |
| 02/19/2002 | CA2095239C Reminder clock |
| 10/18/2001 | WO2001077758A1 Electronic timepiece with indicator hands |
| 02/15/2001 | DE19936299A1 Radio clock for selecting the shape and appearance of a clock face has two horizontally mounted image foils each with two image foil rolls fitted opposite each other for winding on the image foils sliding synchronously and in rotation. |
| 04/05/2000 | CN2372707Y Alam clock |
| 03/29/2000 | CN1050911C Timepiece with a mobile display |
| 09/29/1999 | CN2341180Y Qualtz clock with cursor display |
| 09/08/1998 | US5805534 Positionally consistent, balanced digital time displays |
| 07/22/1998 | EP0854404A1 Analog time switch clock |
| 11/19/1997 | CN2268268Y Quartz clock with moving window on clock dial |
| 01/15/1997 | EP0555468B1 Reminder clock |
| 03/27/1996 | CN2223502Y Light clock |
| 08/16/1995 | CN1106938A Timepiece with a mobile display |
| 01/11/1995 | CN2187321Y Electronic alarm clock |
| 06/22/1993 | US5222053 Analog electronic watch with an electro-optical display device |
| 03/30/1993 | US5199009 Reminder clock |
| 03/18/1993 | WO1993005451A1 Reminder clock |
| 03/02/1993 | CA1314069C Light source with gradually changing intensity |
| 06/10/1992 | CN2107038U Domestic full-automatic calendar |
| 05/29/1992 | WO1992009015A1 Alarm clock |
| 05/14/1992 | DE4035942A1 Weckuhr Alarm clock |
| 05/13/1992 | EP0484821A2 Analog electronic watch with an electro-optical display device |
| 03/27/1991 | CN1012222B Dot-line dual-diplaying program-controlled time signal clock |
| 02/14/1990 | CN1039664A Dot-line dual-displaying program-controlled time signal clock |
| 08/15/1989 | CA1258378A1 Digital display timepiece |
| 08/13/1986 | CN85205075U Flash-music alarm clock with procedure timer |
| 07/10/1984 | US4459031 Electronic timepiece |
| 02/15/1983 | US4373822 Clock with selective visual alarm indicators |
| 02/24/1981 | US4253172 Electronic timepiece or analog type |
| 03/29/1977 | US4015255 Magnetically operated sign |
| 03/16/1976 | US3943694 Divers' fluid-tight watch comprising an electric circuit |