| Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025) |
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| 02/08/1994 | US5285182 Desensitizing apparatus for electromagnetic article surveillance system |
| 02/03/1994 | WO1994002917A1 Proximity detection system |
| 02/03/1994 | EP0587764A4 Video surveillance system. |
| 02/03/1994 | DE4238425C1 Operating glass breakage alarm installation - using voltage provided by piezo element in response to mechanical vibration to provide alternating magnetic field |
| 02/03/1994 | DE4225293A1 Mechanical, electric or acoustic thief proofing devices for skis - includes housings provided for skis, where housings contg. coil of wire or chain for wraparound into key-operated lock |
| 02/02/1994 | EP0581569A1 Intrusion detection system utilizing adaptive sensor technology |
| 02/02/1994 | EP0581027A1 A switching arrangement for security devices |
| 02/02/1994 | EP0323457B1 Motion detector apparatus for responding to edge information contained in a television signal |
| 02/01/1994 | US5283644 Crime prevention monitor system |
| 02/01/1994 | US5283551 Intrusion alarm system |
| 02/01/1994 | US5283550 Shopping cart receiver alarm system |
| 02/01/1994 | US5283549 Infrared sentry with voiced radio dispatched alarms |
| 02/01/1994 | CA2007869C Electronic article surveillance device with remote deactivation |
| 01/27/1994 | DE4223904A1 Road vehicle information disc for remote identification - has disc with built=in resonator that is actuated by roadside unit to generate output to roadside receiver |
| 01/26/1994 | EP0580395A2 A PIR sensor device |
| 01/26/1994 | EP0580297A2 Anti-theft device |
| 01/26/1994 | EP0580003A2 Alarm device to monitor the opening times of a gate |
| 01/26/1994 | CN2154521Y Combined structure of sensor |
| 01/26/1994 | CN2154509Y 安全钮扣 Safety Button |
| 01/26/1994 | CN2154508Y Transduce remote controlled siren |
| 01/26/1994 | CN2154507Y Remote infrared anti-theft siren |
| 01/26/1994 | CN2154506Y Anti-theft card |
| 01/26/1994 | CN2154505Y Electron anti-theft siren |
| 01/25/1994 | US5282092 Video and/or audio signal receiving and recording arrangement |
| 01/25/1994 | US5281953 Heat sensitive purse alarm |
| 01/25/1994 | US5281952 Light--responsive enclosure alarm |
| 01/25/1994 | CA1326517C Apparatus and method for locating boundaries of detection zones covered by an infrared detection system |
| 01/25/1994 | CA1326516C Retainer for documents with alarm |
| 01/23/1994 | CA2099962A1 Anti-theft device |
| 01/20/1994 | WO1994001843A1 Alarm circuit |
| 01/20/1994 | DE4223220A1 Electronic theft protection tag esp. for textiles - has battery and acoustic alarm which is activated if attaching needle is forced. |
| 01/19/1994 | EP0579489A1 A security device |
| 01/19/1994 | EP0579332A1 Electromagnetic detection system |
| 01/19/1994 | EP0578992A2 Method for producing security tags |
| 01/19/1994 | EP0578701A1 Article sorting system |
| 01/19/1994 | EP0578671A1 Tv-based monitoring system. |
| 01/19/1994 | CN2153837Y Multifunction electronic theft-proof alarm |
| 01/19/1994 | CN2153836Y Theft-proof alarm for bicycle |
| 01/19/1994 | CN2153835Y Cipher theft-proof bag with alarm |
| 01/16/1994 | CA2100614A1 Electromagnetic detection system |
| 01/12/1994 | EP0577807A1 A device for activating or deactivating an antitheft device |
| 01/12/1994 | CN2153099Y Wireless remote control pocket alarm for preventing theft and losing |
| 01/12/1994 | CN2153098Y Ultrasonic burglar alarm |
| 01/12/1994 | CN2153097Y Anti-theft alarm controlled by siphon switch |
| 01/06/1994 | WO1994000007A1 Fish farm cage security system |
| 01/06/1994 | CA2139101A1 Fish farm cage security system |
| 01/05/1994 | EP0577491A1 Process and device for monitoring a three-dimensional scene using imagery sensors |
| 01/05/1994 | EP0577015A1 Deactivatable/reactivatable magnetic marker having a step change in magnetic flux |
| 01/05/1994 | DE4220460A1 Mains AC-powered load protection appts. against unauthorised removal of household power tool - exploits sensitivity of transformer-coupled circuit to residual current through 150-nanofarad interference suppression capacitor, when tool is switched off yet plugged in using active rectifier, comparator and relay. |
| 01/05/1994 | CN2152255Y Passive infrared safety alarm indicating board |
| 01/05/1994 | CN2152254Y Household electronic anti-theft alarm |
| 01/04/1994 | US5276435 Labelling system for deterring the theft of a very wide variety of items |
| 01/04/1994 | US5276431 Security tag for use with article having inherent capacitance |
| 01/04/1994 | US5276430 Method and electromagnetic security system for detection of protected objects in a surveillance zone |
| 01/04/1994 | US5276427 Auto-adjust motion detection system |
| 01/04/1994 | US5276326 Advance windshield detection system for use on an aircraft |
| 01/04/1994 | US5275122 Theft-deterrent device |
| 12/29/1993 | CN2151507Y Film against stealing |
| 12/29/1993 | CN2151506Y Computer attachment against stealing |
| 12/29/1993 | CN2150906Y Plush animal toy with alarm |
| 12/28/1993 | US5274357 Combined alarm system and window covering assembly |
| 12/23/1993 | WO1993025984A1 Method and apparatus for theft detection using digital signal processing |
| 12/23/1993 | WO1993025983A1 Method and device for the protection of people or objects |
| 12/23/1993 | DE4220508A1 System for detecting persons in access regions - has motion sensitive detector arrangement with passive IR detector, evaluation circuit driving counter with directional balancing, thermal detector and logic circuit correcting direction-dependent person count |
| 12/23/1993 | CA2138159A1 Method and device for the protection of people or objects |
| 12/22/1993 | CN2150590Y Mechanical sound alarm |
| 12/22/1993 | CN2150589Y Multiple-anti-theft self-locking alarm |
| 12/22/1993 | CN1079835A Method and apparatus for theft detection using digital signal processing |
| 12/21/1993 | US5272527 Picture image monitoring system |
| 12/21/1993 | US5272385 Photographic and X-ray film protection system |
| 12/20/1993 | CA2098340A1 Light-responsive enclosure alarm |
| 12/15/1993 | EP0573518A1 A detector |
| 12/15/1993 | EP0274526B1 Transponder device |
| 12/15/1993 | CN2149662Y Passive type infrared detector |
| 12/14/1993 | US5270811 Telemetry monitoring method and device therefor for transmitting information by means of asynchronous transfer mode technique in broadband ISDN |
| 12/14/1993 | US5270681 Bicycle and bicycle elements theft alarm apparatus |
| 12/08/1993 | CN2148987Y Automtic-taking pictures alarm |
| 12/08/1993 | CN2148986Y Microwave radio alarm |
| 12/08/1993 | CN2148985Y Omnibearing anti-theft automatic alarm |
| 12/08/1993 | CN2148984Y Anti-theft alarm |
| 12/08/1993 | CN2148983Y Alarming anti-theft device for bag and pocket scratched |
| 12/08/1993 | CN1079322A Anti-theft and monitoring alarm cord |
| 12/07/1993 | US5268672 Intrusion detection system incorporating deflection-sensitive coaxial cable mounted on deflectable barrier |
| 12/07/1993 | US5268671 Burglar alarm and door chime |
| 12/07/1993 | US5268670 Alert condition system usable for personnel monitoring |
| 12/01/1993 | EP0572302A1 Alarm system and method by analysis of the signal of a sensor |
| 12/01/1993 | CN2148362Y Body infrared receiver with afocal collecting lens of many kinds of ray |
| 12/01/1993 | CN2148361Y Automatic alarm device |
| 12/01/1993 | CN2147785Y Safety cash antirobbing table |
| 12/01/1993 | CN1079020A Anti-theft alarm door when damaged |
| 11/30/1993 | US5266926 Signal transmission and tag power consumption measurement circuit for an inductive reader |
| 11/30/1993 | US5266924 Shock and vibration detecting device |
| 11/30/1993 | US5266807 Passive infrared detection system |
| 11/30/1993 | US5266795 Wide-angle imaging system with fiberoptic components providing angle-dependent virtual material stops |
| 11/30/1993 | CA2017511C Microwave responder |
| 11/25/1993 | WO1993023833A1 A device for detecting and information transfer |
| 11/25/1993 | WO1993023832A1 Motion detector with improved signal discrimination |
| 11/25/1993 | WO1993023648A1 Laminate and use of the same |
| 11/24/1993 | EP0571052A1 Occupancy detectors etc. |
| 11/24/1993 | EP0516666B1 A security system for surveilling the passage of commodities through defined zones |