| Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025) |
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| 02/22/1990 | DE3827928A1 Videotelephone |
| 02/21/1990 | CN1039917A Microcomputer safety alarm device |
| 02/20/1990 | US4903010 Intrusion detection switch housing |
| 02/20/1990 | US4903009 Intrusion detection device |
| 02/20/1990 | US4902887 Optical motion detector detecting visible and near infrared light |
| 02/14/1990 | EP0354759A2 Electromagnetic identification system |
| 02/14/1990 | EP0354542A2 Security system with door deadbolt interlock |
| 02/14/1990 | EP0354451A2 Intrusion detection system |
| 02/14/1990 | EP0354382A1 Optical surveillance device |
| 02/14/1990 | EP0354369A2 Infrared detector |
| 02/14/1990 | EP0354225A1 Process for adapting the frequency band of an oscillating circuit made from a metal-plastic-metal sandwich foil useful as an identification label. |
| 02/14/1990 | CN2052907U Automatic guard radar |
| 02/13/1990 | US4901146 Imaging assembly and mounting for surveillance viewing under remote control |
| 02/13/1990 | US4900386 Method of producing labels each having a circuit forming an oscillating circuit |
| 02/13/1990 | US4899683 Safety device to indicate if a door/window has been opened |
| 02/08/1990 | WO1990001200A1 Open/closed detector for window |
| 02/08/1990 | DE3827989C1 Method and arrangement for monitoring a danger area |
| 02/08/1990 | DE3826579A1 Penetration alarm system for boundaries of an area to be protected which are liable to manipulation or destruction |
| 02/07/1990 | EP0353646A2 Passive infrared intrusion detector for monitoring spaces |
| 02/06/1990 | US4899134 Newborn anti-theft device |
| 02/06/1990 | CA1265597A1 Surveillance installation |
| 02/01/1990 | DE3825757A1 Method for monitoring a space (room) |
| 01/31/1990 | EP0353040A2 Electromagnetic identification system |
| 01/31/1990 | EP0352936A2 Deactivatable frequency-dividing-transponder tag |
| 01/31/1990 | EP0352513A2 Load isolated article surveillance system and antenna assembly |
| 01/30/1990 | US4897630 Programmable alarm system having proximity detection with vocal alarm and reporting features |
| 01/25/1990 | WO1990000785A1 Automatic cash register |
| 01/23/1990 | US4896140 Display table security system |
| 01/23/1990 | US4896139 Self-contained burglar alarm device for sliding windows, doors and the like |
| 01/23/1990 | US4896039 Active infrared motion detector and method for detecting movement |
| 01/23/1990 | CA1264840A1 Identification system |
| 01/23/1990 | CA1264832A1 Fault detecting intrusion detection device |
| 01/18/1990 | DE3830265C1 Glass break detector (sensor) |
| 01/17/1990 | CN2051369U Mini-mulipurpose electronic siren |
| 01/17/1990 | CN2051368U Auto-electronic warning box |
| 01/16/1990 | US4894716 T.V. motion detector with false alarm immunity |
| 01/16/1990 | US4894527 Light dependent resistor digital control circuit |
| 01/16/1990 | CA1264488A1 Label for use in anti-theft surveillance system |
| 01/10/1990 | EP0350119A1 Stand-alone utility device with antitheft code |
| 01/10/1990 | EP0349936A2 Passive infrared movement alarm |
| 01/10/1990 | EP0349565A1 Alarm apparatus, preferably in a window structure. |
| 01/09/1990 | US4893014 Movement monitor having an infrared detector |
| 01/09/1990 | US4893005 Method and apparatus for area and perimeter security with reflection counting |
| 01/09/1990 | CA1264362A1 Electromagnetic surveillance system with improved signal processing |
| 01/03/1990 | EP0348927A1 Arrangement and method for intruder detection |
| 01/03/1990 | CN2050650U Anti-theft alarm door bell |
| 01/03/1990 | CN2050632U Double route fully automatic sensitive anti-theft instrument |
| 01/03/1990 | CN2050631U Radio anti-theft alarm |
| 01/03/1990 | CN2050630U Household electronic alarm for purpose of anti-theft |
| 01/03/1990 | CN2050629U Multifunction domestic anti-theft alarm |
| 01/02/1990 | US4891627 Device for detecting object |
| 01/02/1990 | US4890713 Pan and tilt motor for surveillance camera |
| 12/28/1989 | WO1989012916A1 Antenna system for magnetic and resonant circuit detection |
| 12/28/1989 | WO1989012877A1 Continuously armed high reliability pulse train processor |
| 12/27/1989 | EP0347704A1 Infrared detector |
| 12/26/1989 | US4890265 Infra-sonic detector and alarm with self adjusting reference |
| 12/26/1989 | US4890111 Passive transponder |
| 12/26/1989 | US4890094 Wallet incorporating credit card alarm system |
| 12/26/1989 | US4890007 Carpet mat switch |
| 12/21/1989 | DE3906808A1 Security box |
| 12/21/1989 | DE3820353A1 Theft alarm device |
| 12/20/1989 | EP0347209A2 Security enclosure |
| 12/20/1989 | CN2049800U Anti-thief safety warner |
| 12/19/1989 | US4888581 Pressure sensitive security system for tracking motion over a surface |
| 12/19/1989 | US4888579 False alarm minimization and direction determination methods |
| 12/19/1989 | US4887737 Dispensing device with sensory alert |
| 12/14/1989 | WO1989012371A1 Method and apparatus for detecting innovations in a scene |
| 12/14/1989 | DE3819805A1 Device for securing objects, placed in sales rooms, exhibitions and the like, such as small electronic apparatuses or the like, against unauthorised removal |
| 12/14/1989 | DE3818715A1 Pyrodetector with a wide-angle accessory |
| 12/13/1989 | EP0345878A2 Thermal radiation detection apparatus |
| 12/13/1989 | EP0345361A1 Infrared detector |
| 12/12/1989 | US4887069 Perimeter intrusion detection system with block ranging capabilities |
| 12/12/1989 | US4887065 Control system for a combined central locking and burglar alarm system for vehicles |
| 12/12/1989 | US4887024 Person detecting device |
| 12/06/1989 | EP0345181A1 Process and appliance for detecting and recognizing impact by measuring the impedance variation |
| 12/06/1989 | CN2049002U Alarm for door bell |
| 12/06/1989 | CN2049001U Anti theft alarm |
| 12/05/1989 | US4885572 Anti-theft alarm device for vehicle |
| 12/05/1989 | US4885570 Steal and burglar preventive purse |
| 11/30/1989 | WO1989011710A1 An intrusion detection device |
| 11/30/1989 | WO1989011709A1 A scanning intrusion detection device |
| 11/30/1989 | WO1989011708A1 Method of intrusion detection |
| 11/30/1989 | WO1989011707A1 A method of intrusion detection over a wide area |
| 11/29/1989 | CN2048605U Anti-theft touching warner |
| 11/28/1989 | US4884132 Personal security system |
| 11/28/1989 | US4884067 Motion and position sensing alarm |
| 11/28/1989 | US4884063 Dual status magnetic marker having magnetically biasable flux collectors for use in electronic article surveillance systems |
| 11/28/1989 | US4884062 Alarming wallet actuated by a pickpocket's fingers |
| 11/28/1989 | US4884061 Capacitive apparatus to monitor the integrity of a wall |
| 11/28/1989 | US4884060 Multi-state selection switch for a personal emergency response system |
| 11/28/1989 | US4884055 Antitheft system |
| 11/28/1989 | US4882815 Arrangement in a purse or bag secured against theft |
| 11/23/1989 | EP0342378A2 Anti-theft device for a slidable built-in apparatus |
| 11/22/1989 | CN2048217U Wireless warning device |
| 11/21/1989 | US4882569 Deactivatable fequency-dividing-transponder tag |
| 11/21/1989 | US4882567 Intrusion detection system and a method therefor |
| 11/21/1989 | US4882491 Infrared detector |
| 11/16/1989 | WO1989011200A1 Imaging assembly and mounting for surveillance viewing under remote control |
| 11/15/1989 | EP0341906A2 A security system |
| 11/15/1989 | EP0341828A1 Antipilferage tags and their use |