| Patents for G04B 23 - Arrangements producing acoustic signals at preselected times (666) |
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| 06/29/1988 | CN86208259U Device changing mechanical time signal clock into timing alarm clock |
| 06/28/1988 | US4754444 Alarm clock |
| 05/31/1988 | US4748602 Alarm mechanism |
| 05/24/1988 | US4747087 Alarm clock |
| 04/26/1988 | US4740936 Alarm on-off mechanism for alarm watch |
| 03/09/1988 | EP0258563A2 Alarm clock with a battery mounting support |
| 02/23/1988 | US4727526 Alarm on-off mechanism for alarm watch |
| 02/03/1988 | CN87104980A Alarm mechanism |
| 01/07/1988 | EP0250574A1 Watch with alarm |
| 12/23/1987 | CN86208751U Pendulum clock with music alarm-timing |
| 10/27/1987 | US4702614 Baseball alarm clock |
| 09/15/1987 | US4693612 Alarm mechanism |
| 08/26/1987 | CN86203162U Adjustable multiple timing alarm for clock |
| 07/16/1987 | WO1987004274A1 Watch with alarm |
| 07/08/1987 | CN86108376A 闹机构 Downtown institution |
| 04/14/1987 | US4657404 Alarm signaling time indicating mechanism for an alarm clock |
| 02/25/1987 | CN86105622A Preselected device for preselected clock |
| 08/06/1986 | CN85204658U Clock-controlled timing switch |
| 05/14/1986 | CN85201932U Multipurpose time device for controlling wind gap and oven wind gap device |
| 04/29/1986 | US4585358 Shakeable shutoff alarm clock |
| 05/02/1985 | EP0139562A1 Alarm stopping mechanism for alarm clocks and domestic clocks |
| 03/19/1985 | US4505597 Novelty alarm clock |
| 03/12/1985 | US4504153 Pharmacist-programmable medication prompting system and method |
| 02/05/1985 | US4497582 Planetarium alarm clock |
| 08/14/1984 | US4465381 Timepiece with modular alarm activating mechanism |
| 06/27/1984 | EP0111671A1 Clock with an alarm and striking mechanism |
| 06/05/1984 | US4452537 Alarm setting apparatus for timepieces |
| 05/22/1984 | US4449833 Break away alarm clock |
| 05/15/1984 | US4448541 Medical timer apparatus |
| 03/07/1984 | EP0101812A2 Medical use compliance aid |
| 01/24/1984 | US4427301 Timepiece with an activating mechanism |
| 12/06/1983 | US4419016 Device for indicating last medication usage |
| 08/23/1983 | US4400094 Alarm-setting mechanism for timepiece with escapement protecting against reverse rotation |
| 07/12/1983 | CA1149620A1 Time-setting device for alarm clock |
| 06/21/1983 | US4389123 Electronic alarm watch |
| 03/15/1983 | US4376994 Time detecting device for alarm clock |
| 01/11/1983 | US4367955 Medicament container with timer top |
| 12/21/1982 | US4364673 Electric clock, particularly a quartz clock |
| 09/15/1982 | EP0060216A1 Timepiece including a release mechanism |
| 09/15/1982 | EP0060215A1 Timepiece including a modular release mechanism |
| 05/25/1982 | US4332019 Alarm clock control |
| 11/03/1981 | US4298972 Alarm signaling time detecting device for leaf type digital clock |
| 10/06/1981 | US4293938 Alarm signaling time detecting device for digital clock |
| 09/02/1981 | EP0034701A1 Electric clock, in particular a quartz clock |
| 09/01/1981 | US4287586 Signaling time detecting device for leaf type digital clock |
| 08/04/1981 | US4282596 Alarm clock case shut-off device |
| 06/03/1981 | EP0029576A2 Setting device for a signalling clock, especially an alarm clock |
| 05/26/1981 | US4270195 Alarm setting indication device for digital clock |
| 08/26/1980 | US4218875 Alarm |
| 08/12/1980 | US4216650 Alarm wristwatch |
| 07/01/1980 | US4209969 Alarm clock |
| 06/24/1980 | US4208867 Timing device |
| 05/20/1980 | US4203279 Timepiece which permits freely adjusting the level of sounds produced therein and given out thereof |
| 01/01/1980 | US4180970 Wristwatch with sound-making device |
| 10/30/1979 | US4172358 High accuracy timer actuating mechanism in a leaf type digital clock |
| 02/06/1979 | US4137703 Timer device |
| 01/23/1979 | CA1046809A1 Sound making system |
| 10/03/1978 | US4117743 Device for retaining two alternate positions |
| 03/21/1978 | US4079581 Alarm device for clocks |
| 01/24/1978 | US4069658 Alarm setting device for timepieces |
| 12/13/1977 | US4062249 Arrangement for sensing the rotary movement of a rotary means |
| 12/28/1976 | US4000384 Unlocking mechanism |
| 12/14/1976 | US3996734 Minute-interval alarming device for a clock or the like |
| 09/14/1976 | US3979900 Device for connecting two parts of a clock |
| 06/01/1976 | US3960105 Sound making system |
| 04/20/1976 | US3952177 Timer for multi-purpose use |