| Patents for G04G 13 - Producing acoustic time signals (1,738) |
|---|
| 04/14/1981 | US4262352 Electronic multifunction timepiece employing the PLA system |
| 04/14/1981 | US4262351 Electronic timepiece |
| 04/14/1981 | US4262346 Multi function electronic timepiece |
| 04/07/1981 | US4261050 Electronic watch having a stepping motor equipped with an alarm system |
| 03/31/1981 | US4259737 Electronic watch |
| 03/31/1981 | US4259736 Electronic timepiece |
| 03/17/1981 | US4257115 Switch structure for electronic timepiece |
| 03/17/1981 | CA1097790A1 Rodent repellor |
| 03/10/1981 | US4255803 Electronic timepiece equipped with alarm function |
| 02/24/1981 | CA1096502A1 Interactive wristwatch calculator |
| 02/17/1981 | US4251877 Clock, especially striker clock |
| 02/10/1981 | US4250573 Digital alarm wristwatch |
| 01/20/1981 | US4246651 Electronic timepiece |
| 01/13/1981 | US4245336 Electronic tone generator |
| 01/06/1981 | US4244042 Alarm timepiece |
| 01/06/1981 | US4244041 Electronic timepiece with an alarm device |
| 12/30/1980 | US4242748 Electric alarm clock |
| 12/30/1980 | US4242745 Electronic timepiece with electroacoustic transducer |
| 12/23/1980 | US4241441 Electronic timepiece |
| 12/16/1980 | US4240154 Electronic digital stop watch |
| 12/11/1980 | WO1980002753A1 Digital display clock |
| 12/09/1980 | US4238832 Time data processing apparatus |
| 12/02/1980 | US4236375 Electronic watch |
| 11/25/1980 | US4236241 Electronic timepiece |
| 11/18/1980 | US4234945 Electronic timepiece with hourly strike mechanism |
| 11/18/1980 | US4234944 Alarm electronic timepiece |
| 11/11/1980 | US4233679 Adjustable piezoelectric transducer for a watch |
| 11/04/1980 | US4232241 Electric circuit for driving a piezoelectric vibrator |
| 10/28/1980 | CA1088326A1 Electronic alarm timepiece with independent alarm actuation |
| 10/21/1980 | US4228645 Electronic timepiece equipped with alarm system |
| 10/07/1980 | CA1086969A1 Electronic timepiece with single and repeat alarm circuits |
| 10/07/1980 | CA1086967A1 Digital electronic watch with prevention of simultaneous energization of alarm and illuminating means |
| 09/23/1980 | US4223523 Electronic analog alarm timepiece |
| 08/26/1980 | US4218871 Electronic timer |
| 08/12/1980 | US4216649 Function selection circuit for multi-function timepiece |
| 08/12/1980 | US4216647 Electronic timepiece |
| 07/29/1980 | CA1082469A1 System for controlling the striking mechanism of a timepiece |
| 07/15/1980 | US4213121 Chime tone audio system utilizing a piezoelectric transducer |
| 07/15/1980 | US4212154 Time striking device for electronic timepiece |
| 07/08/1980 | US4211064 Time signal timepiece |
| 06/24/1980 | US4208866 Electronic timepiece equipped with alarm |
| 06/24/1980 | CA1079987A1 Digital electronic alarm timepiece |
| 06/24/1980 | CA1079986A1 Digital alarm and subsidiary time electronic timepiece |
| 06/24/1980 | CA1079985A1 Digital alarm watch with switching member for operating a plurality of switching functions |
| 06/17/1980 | CA1079531A1 Digital alarm timepiece with display of time remaining to alarm set time |
| 06/10/1980 | US4206590 Electronic wristwatch case |
| 06/03/1980 | US4205519 Electronic time-piece with acoustic signal, for signalling a particular working mode |
| 06/03/1980 | US4205517 Alarm electronic timepiece |
| 06/03/1980 | CA1078964A1 Interactive wristwatch calculator |
| 05/27/1980 | US4204398 Method and means for automatically setting timepieces in a time zone |
| 05/20/1980 | US4203278 Alarm electronic timepiece |
| 05/06/1980 | US4201038 Alarm electronic watch |
| 04/22/1980 | CA1075917A1 Electronic stopwatch with elapsed time alarm |
| 04/17/1980 | WO1980000755A1 Timer and alarm apparatus |
| 04/15/1980 | US4197697 Alarm watch |
| 04/08/1980 | US4196583 Analogue electronic alarm timepiece |
| 04/08/1980 | CA1075016A1 Electronic clock having visual and auditory indications |
| 03/11/1980 | US4192133 Electronic watch with means for producing pulse sound at selected intervals |
| 03/04/1980 | CA1072749A1 Electronic timepiece with recurrent and single alarm |
| 03/04/1980 | CA1072748A1 Electronic timepiece with time shared selection of alarm memories |
| 03/04/1980 | CA1072747A1 Electronic timepiece with automatic alarm shut off |
| 03/04/1980 | CA1072745A1 Alarm electronic timepiece |
| 02/26/1980 | US4189910 Electronic watch with alarm mechanism |
| 02/20/1980 | EP0008298A1 Multiple character word indication system employing sequential sensible indicia |
| 02/19/1980 | US4188776 Electronic watch |
| 02/12/1980 | US4187670 Time signal generator circuit for use in an electronic timepiece |
| 01/29/1980 | CA1070505A1 Multiple alarm channel electronic timepiece with flashing display |
| 01/22/1980 | US4185283 Multiple character word indication system employing sequential sensible indicia |
| 01/08/1980 | CA1069319A1 Electronic watch with alarm mechanism |
| 12/25/1979 | US4180808 Alarm circuit |
| 12/18/1979 | US4178750 Control circuit for electronic timepiece |
| 12/11/1979 | CA1067708A1 Talking solid state timepiece |
| 12/04/1979 | US4176518 Electronic clock having audible time indication |
| 12/04/1979 | US4176515 Electronic clock, particularly a quartz clock |
| 11/20/1979 | CA1066514A1 Digital timepiece having means for selectively or simultaneously displaying both conventional time and remaining time functions |
| 10/30/1979 | US4172360 Digital alarm timepiece |
| 10/30/1979 | US4172359 Timepiece with electronic chime generator |
| 10/09/1979 | CA1063813A1 Electronic timepiece having an alarm device |
| 09/04/1979 | US4166358 Solid state alarm for clock-radio |
| 08/07/1979 | US4163966 Rodent repellor |
| 07/26/1979 | WO1979000486A1 Multiple character word indication system employing sequential sensible indicia |
| 07/10/1979 | CA1057963A1 Programmable signal clock with electronic appointments marking calendar |
| 06/19/1979 | US4158285 Interactive wristwatch calculator |
| 05/08/1979 | US4152887 Digital electronic alarm timepiece |
| 04/24/1979 | US4150535 Electronic timepiece |
| 04/10/1979 | US4149257 Alarm watch equipped with electronic calculator |
| 04/10/1979 | US4148181 System for controlling the striking mechanism of a timepiece |
| 04/03/1979 | US4147021 Electronic watch having an alarm means |
| 03/20/1979 | US4144706 Alarm watch with remote sonic generator |
| 12/26/1978 | US4131855 Digital time signalling device |
| 10/24/1978 | US4121414 Alarm timepiece |
| 09/26/1978 | US4117542 Electronic pocket directory |
| 09/26/1978 | US4115993 Digital alarm watch |
| 09/05/1978 | US4110969 Digital electronic alarm timepiece |
| 08/22/1978 | US4107916 Electronic watch having an alarm means |
| 08/08/1978 | US4104865 Electronic timepiece having an alarm device |
| 08/08/1978 | US4104863 Electronic timepiece having an alarm device |
| 08/08/1978 | US4104862 Apparatus for generating an alarm sound |
| 08/08/1978 | US4104861 Electronic stop watch |
| 07/25/1978 | US4102120 Electronic alarm clock with a servicing arrangement for time adjustment |