| Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025) |
|---|
| 03/15/1977 | US4012732 Security device |
| 03/15/1977 | US4012731 Burglar alarm system |
| 03/15/1977 | US4012730 Doppler detection device with integrator sampling means to inhibit false alarms |
| 03/15/1977 | US4012649 Piezoelectric stress/strain intrusion detectors |
| 03/15/1977 | US4012635 Light barrier system |
| 03/15/1977 | US4012611 Inertia switch for anti-intrusion sensing systems |
| 03/08/1977 | US4011555 Radio and television alarm system |
| 03/08/1977 | US4011554 Intrusion alarm apparatus |
| 03/01/1977 | US4010459 Systems for the detection of moving objects within a survey area by microwave diffraction |
| 03/01/1977 | US4010458 Light gate system |
| 02/22/1977 | US4009474 Alarm system for electrical receptacles |
| 02/15/1977 | US4008465 Keyless anti-theft entry system |
| 02/08/1977 | US4007490 Time lapse video tape recorder |
| 02/01/1977 | US4006452 Electrical alarm device for motorcycles |
| 02/01/1977 | US4006451 Modular alarm circuit |
| 02/01/1977 | US4006450 Vehicle burglar alarm with interior control switch |
| 01/25/1977 | US4005397 Fence alarm |
| 01/18/1977 | US4004273 Engine speed responsive anti-theft device for vehicle |
| 01/11/1977 | US4003048 Remote alarm system for detection of fire extinguisher removal |
| 01/11/1977 | US4003045 Intrusion detection systems with turbulence discrimination |
| 01/11/1977 | US4002956 Automatic electronic lock off system for an appliance |
| 01/11/1977 | US4002397 Connector for electric plug |
| 01/04/1977 | US4001881 Switched video recording system |
| 01/04/1977 | US4001805 Sound activated alarm system |
| 01/04/1977 | US4001771 Intruder detecting security system |
| 01/04/1977 | US4001745 Intrusion detection transducer |
| 01/04/1977 | US4001586 Thick film sensor and infrared detector |
| 01/04/1977 | US4000543 Monitor actuating device and reusable fastener therefor |
| 12/28/1976 | US4000488 Label alarm system |
| 12/14/1976 | USRE29082 Intrusion detector |
| 12/14/1976 | US3997723 Compact unit for optical security system |
| 12/07/1976 | US3996432 Key controlled alarm activating system |
| 11/30/1976 | US3995223 Seismic-acoustic detection device |
| 11/23/1976 | US3993988 Intrusion detection apparatus to signal movement of a partition |
| 11/23/1976 | US3993866 Camera capsule |
| 11/09/1976 | US3991415 Alarm and light system |
| 11/02/1976 | US3990069 System for monitoring changes in the fluidic impedance or volume of an enclosure |
| 11/02/1976 | US3990065 Theft detection system |
| 11/02/1976 | US3990063 System for monitoring changes in the fluidic impedance or volume of an enclosure |
| 10/26/1976 | USRE29019 Intruder detection system |
| 10/26/1976 | US3988726 Infrared intrusion detection apparatus |
| 10/26/1976 | US3988724 Theft alarm |
| 10/26/1976 | US3988533 Video-type universal motion and intrusion detection system |
| 10/19/1976 | US3987428 Optical laser security system |
| 10/19/1976 | US3987427 Doppler detection device with phase shift means to inhibit false alarms |
| 10/19/1976 | US3987244 Programmable image processor |
| 10/12/1976 | US3986183 Burglar alarm |
| 10/12/1976 | US3986182 Multi-zone intrusion detection system |
| 10/05/1976 | US3984803 Seismic intrusion detector system |
| 09/28/1976 | US3983552 Pilferage detection systems |
| 09/28/1976 | US3983551 Alarm system for coin-operated telephone |
| 09/28/1976 | US3983338 Apparatus and method to test the condition of an electrical service line and to determine the presence and/or removal of electrical equipment connected to the line |
| 09/14/1976 | US3980998 Intrusion alarms |
| 09/07/1976 | US3979740 Monitoring system |
| 08/31/1976 | US3978467 Door alarm system responsive to forced entry |
| 08/24/1976 | US3976988 Ultrasonic wave type alarm device |
| 08/24/1976 | US3976921 Triggering circuit |
| 08/17/1976 | US3975723 Door alert system and magnetic switch therefor |
| 08/17/1976 | US3975722 Protective alarm system |
| 08/10/1976 | US3974492 Alarm system |
| 08/10/1976 | US3974489 Centralized monitor and alarm system for monitoring remote areas with acoustical electric transducers |
| 08/10/1976 | US3973357 Door closer with switch actuated thereby |
| 08/03/1976 | US3973250 Acoustically coupled burglar alarm system |
| 08/03/1976 | US3973208 Capacitor detector device |
| 08/03/1976 | US3972598 Multifaceted mirror structure for infrared radiation detector |
| 07/27/1976 | US3972039 Article removal and pilferage detection system and apparatus |
| 07/20/1976 | US3971009 Key release type burglar alarm |
| 07/20/1976 | US3971006 Multi directional motion and vibration triggering device |
| 07/20/1976 | US3970846 Presence detecting system with self-checking |
| 07/13/1976 | US3969712 Pool alarm |
| 07/13/1976 | US3969709 Wireless burglar alarm system |
| 07/06/1976 | US3968485 Burglar warning device |
| 07/06/1976 | US3968484 Spring-actuated security alarm for a door |
| 07/06/1976 | US3968483 Burglar and fire alarm system |
| 07/06/1976 | US3968482 Pressure modulated alarm system |
| 07/06/1976 | US3968474 Alarm system having delay characteristic |
| 06/29/1976 | US3967262 Line integrated combination magnetic and strain line sensor |
| 06/29/1976 | US3967260 Intrusion alarm system with improved air turbulence compensation |
| 06/29/1976 | US3967259 Security system with plural sensors connected in parallel across the transmission line |
| 06/29/1976 | US3967258 Alarm system |
| 06/29/1976 | US3967161 A multi-frequency resonant tag circuit for use with an electronic security system having improved noise discrimination |
| 06/29/1976 | US3967080 Switch device for indicating the undue opening of doors and closing-wings |
| 06/22/1976 | US3965465 Self timing switch |
| 06/22/1976 | US3965355 Low power infrared laser intrusion systems |
| 06/15/1976 | US3964044 Multiple operating alarm systems employing oil burner flame monitoring relays |
| 06/15/1976 | US3964043 Electronic alarm bolt |
| 06/15/1976 | US3963948 Magnetic pulse generator |
| 06/08/1976 | US3962696 Protective systems |
| 06/08/1976 | US3962693 Motion detection device including a pendulum switch |
| 06/01/1976 | US3961328 Detection system |
| 06/01/1976 | US3961323 Cargo monitor apparatus and method |
| 06/01/1976 | US3961322 Real time signal discrimination circuitry |
| 06/01/1976 | US3961321 Omnidirectional ultrasonic intrusion surveillance unit |
| 06/01/1976 | US3961320 Intrusion detection systems |
| 05/25/1976 | US3959790 Appliance alarm device |
| 05/18/1976 | US3958213 Adaptive gain control and method for signal processor |
| 05/18/1976 | US3958118 Intrusion detection devices employing multiple scan zones |
| 05/18/1976 | US3957013 Portable event detecting alarm |
| 05/18/1976 | US3957012 Anti-burglary sound emitting device |
| 05/11/1976 | US3956743 Motion detection system |