| Patents for G08B 23 - Alarms responsive to unspecified undesired or abnormal conditions (8,164) |
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| 07/31/1979 | US4163224 Display device with memory |
| 07/24/1979 | US4162489 Fire alarm system comprising a plurality of alarms which may be operated by way of an alarm loop |
| 07/11/1979 | EP0002868A2 Fire detector |
| 06/19/1979 | US4158839 Transition alarm circuit |
| 06/12/1979 | US4158148 Latching detector circuit |
| 05/02/1979 | EP0001611A2 Apparatus and method for detecting substances and for regulating current |
| 04/10/1979 | US4149162 Battery discriminator circuit for smoke detectors |
| 04/03/1979 | US4148007 Serial-indication fault display system for vehicles |
| 03/27/1979 | CA1051535A1 Pulsed alarm system |
| 03/21/1979 | EP0001154A1 Shock and vibration responsive contact device incorporating two or more seismic elements |
| 03/06/1979 | CA1050147A1 Alarm control system |
| 02/13/1979 | US4139844 Surveillance method and system with electromagnetic carrier and plural range limiting signals |
| 01/30/1979 | US4137467 Sensor interface circuit |
| 01/23/1979 | CA1046943A1 Luminescent solid state status indicator |
| 01/02/1979 | CA1045691A1 Method and apparatus for extending the operating range of a condition monitoring system |
| 12/12/1978 | US4129030 Sensing apparatus and method |
| 11/28/1978 | CA1043438A1 Supervisory circuit for parallel connected devices |
| 10/03/1978 | CA1039542A1 Timed buzzer |
| 09/26/1978 | US4117451 Apparatus for detecting variation of a condition amount in a mechanical device |
| 09/26/1978 | US4116494 Test circuit for periodically monitoring the integrity of an antiskid brake control system |
| 08/29/1978 | US4110738 Anti-theft alarm with coded radio link |
| 08/01/1978 | US4104628 High output audible alarm device utilizing a piezoelectric transducer and voltage doubling means |
| 08/01/1978 | US4104597 Variable sensitivity monitor circuit |
| 07/25/1978 | US4103299 Two-wire pilot device solid state control system |
| 07/11/1978 | USRE29701 Timed buzzer |
| 07/04/1978 | US4099157 Single wire power/signal system for vehicle auxiliary devices |
| 06/20/1978 | US4096473 High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means |
| 06/20/1978 | US4096354 Apparatus for distinguishing between failures in a digital transmission network |
| 05/09/1978 | CA1031052A1 Alarm device for automotive vehicles |
| 03/28/1978 | US4081795 Apparatus and method for detecting the occurrence of an alarm condition |
| 03/14/1978 | US4079271 Alarm driver for a smoke detector |
| 02/07/1978 | US4072925 Warning system for vehicles |
| 11/29/1977 | US4060716 Method and apparatus for automatic abnormal events monitor in operating plants |
| 10/11/1977 | US4053868 Vehicle system monitor |
| 09/27/1977 | US4051467 Fluid flow detector for a fire alarm system |
| 08/09/1977 | US4041455 Interrogation and monitoring system |
| 07/05/1977 | US4034369 Check circuit for checking vehicle warning system |
| 07/05/1977 | US4034336 Electronic monitor system for automobiles |
| 06/14/1977 | US4030095 Pulsed alarm system |
| 05/17/1977 | US4024521 Alarm indicator circuit using indicator lamps |
| 04/26/1977 | US4020488 Or control apparatus |
| 04/12/1977 | US4017826 Method and apparatus for extending the operating range of a condition monitoring system |
| 03/29/1977 | US4015237 Vehicle alarm system |
| 03/22/1977 | US4013947 Central coupler for a centralized monitor system for motor vehicles |
| 03/15/1977 | US4012727 Alarm control system |
| 02/01/1977 | US4006460 Computer controlled security system |
| 02/01/1977 | US4006448 Centralized monitor system for motor vehicles |
| 01/11/1977 | US4003043 Timed buzzer |
| 01/04/1977 | US4001816 Electronic chime |
| 12/21/1976 | US3999175 Fault detection indication system |
| 11/02/1976 | US3990040 Apparatus for transmitting distress signals |
| 10/12/1976 | US3986166 Anti-tamper automobile alarm system utilizing plural reed type switches |
| 10/05/1976 | US3984825 Condition monitoring apparatus |
| 09/14/1976 | US3980999 Arrangement for detecting relative angular movement of a steering wheel |
| 09/14/1976 | US3980996 Self-sustaining alarm transmitter device |
| 06/15/1976 | US3964039 Luminescent solid state status indicators |
| 06/15/1976 | US3964018 Vehicle monitoring system with fault override |
| 06/01/1976 | US3961322 Real time signal discrimination circuitry |
| 05/18/1976 | US3958240 Alarm and status monitoring system |
| 05/04/1976 | US3955183 Alarm condition sensing and indicating circuit with test capability |
| 03/16/1976 | US3944969 Central warning apparatus for vehicles |
| 02/03/1976 | US3936821 Supervisory circuit for parallel connected devices |
| 01/20/1976 | US3934237 Alarm device |
| 01/06/1976 | US3931621 Variable amplitude timed alarm system |