| Patents for G08B 7 - Signalling systems according to more than one of groups; Personal calling systems according to more than one of groups (2,936) |
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| 12/08/1981 | US4305069 Personal smoke and fire detector and warning unit |
| 09/08/1981 | US4288784 Light and alarm device |
| 09/01/1981 | US4287509 Sound and light signaling system |
| 08/25/1981 | US4286257 Tone generator |
| 08/25/1981 | CA1107705A1 Flashlamp assembly for providing highly intense audible and visual signals |
| 06/30/1981 | US4276542 Alarm system for dwellings |
| 06/23/1981 | US4275383 Patient signalling system |
| 06/23/1981 | US4275274 Audio visual monitoring system for announcing a message upon detection of a monitored condition |
| 06/16/1981 | US4274084 Audio-visual signal circuits |
| 03/24/1981 | US4258354 Portable alarm device |
| 03/17/1981 | CA1097761A1 Refrigerator and freezer monitoring device |
| 03/03/1981 | US4254405 Self-contained emergency electric signal light and audiblizer |
| 01/27/1981 | US4247844 Alarm light |
| 01/06/1981 | US4243973 Home integrated signal system |
| 12/23/1980 | US4241332 Personal security alarm |
| 10/28/1980 | US4230450 Intrusion alarm safety |
| 04/03/1979 | US4148023 Emergency exit indicator |
| 03/27/1979 | US4146356 Flashlamp article having internally located combustible member |
| 02/13/1979 | US4139845 Flashlight burglar alarm apparatus |
| 12/19/1978 | US4130083 Activating mechanism for flashlamp article |
| 12/19/1978 | US4130082 Flashlamp assembly for providing highly intense audible and visual signals |
| 10/24/1978 | CA1041171A1 Energy transfer circuit |
| 09/26/1978 | US4116615 Door-actuated activation means for flashlamp article |
| 07/18/1978 | US4101880 Audiovisual signaling device |
| 05/23/1978 | US4091373 Selective calling receiver |
| 05/16/1978 | US4090185 Emergency position-fixing device |
| 02/14/1978 | US4074251 Appointment reminders |
| 02/14/1978 | US4074244 Audible-visual warning alarm system |
| 02/14/1978 | US4074225 Emergency detection alarm and evacuation system |
| 11/29/1977 | US4060716 Method and apparatus for automatic abnormal events monitor in operating plants |
| 03/22/1977 | US4013921 Warning light control |
| 10/05/1976 | US3984825 Condition monitoring apparatus |
| 08/31/1976 | US3978392 Energy transfer circuit |
| 07/13/1976 | US3969720 Emergency alarm and evacuation system |
| 05/25/1976 | US3959787 Refrigeration alarm |
| 02/17/1976 | US3939385 Signalling apparatus for ships |