| Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025) |
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| 04/13/1994 | EP0592097A2 Penetration detection system |
| 04/13/1994 | EP0591853A1 Magnetic tag deactivator for pre-existing check-out counters |
| 04/13/1994 | EP0591640A1 Semi-hard magnetic elements and method of making same |
| 04/13/1994 | EP0591585A1 Remote monitoring unit |
| 04/13/1994 | EP0591580A1 Garment security clip |
| 04/13/1994 | EP0591498A1 System for surveillance of a fixed or movable objet |
| 04/13/1994 | CN2161957Y Minisize theft-proof button |
| 04/13/1994 | CN2161956Y Portable alarm |
| 04/13/1994 | CN2161955Y Theft-proof alarm |
| 04/12/1994 | US5303051 Method for removing the effects of particulate matter from sequence images |
| 04/12/1994 | US5302945 Electric appliance fault monitor and indicator |
| 04/12/1994 | US5302942 For establishing a guard zone along a machine |
| 04/10/1994 | CA2107498A1 Frequency-dividing-transponder tag |
| 04/07/1994 | CA2107287A1 Magnetic tag deactivator for pre-existing check-out counters |
| 04/06/1994 | EP0590581A2 Marker assembly for use with an electronic article surveillance system |
| 04/06/1994 | CN2160957Y Anti-theft alarm |
| 04/06/1994 | CN2160956Y 线路防盗报警器 Line burglar alarm |
| 04/06/1994 | CN2160955Y Multifunctional mini-anti-theft alarm |
| 04/06/1994 | CN2160954Y Identification type multifunction safety alarm |
| 04/06/1994 | CN2160953Y Portable alarm |
| 04/05/1994 | US5300922 Swept frequency electronic article surveillance system having enhanced facility for tag signal detection |
| 04/05/1994 | US5299971 Interactive tracking device |
| 04/02/1994 | CA2104709A1 Marker assembly for use with an electronic article surveillance system |
| 03/31/1994 | WO1994007222A1 Intrusion detection system |
| 03/31/1994 | WO1994007221A1 Improvements in security enclosure manufacture |
| 03/31/1994 | WO1994007220A1 Burglar alarm |
| 03/30/1994 | CN2160135Y Multifunction anti-theft device |
| 03/30/1994 | CN2160134Y Anti-theft garment |
| 03/30/1994 | CN1024102C Alarm for door opening |
| 03/24/1994 | DE4228715A1 Display item anti-theft system for showcase - has glass cases in upper part directly joined to one another with interspace between two glass cases. |
| 03/23/1994 | EP0588645A1 Thermal image detecting apparatus |
| 03/23/1994 | EP0588643A1 Thermal image detecting apparatus |
| 03/23/1994 | EP0588073A1 Pyroelectric sensor for passive infrared motion detectors |
| 03/23/1994 | EP0587801A1 Signal transmission and tag power consumption measurement circuit for an inductive reader |
| 03/23/1994 | EP0587764A1 Video surveillance system |
| 03/23/1994 | EP0587696A1 Stabilized resonant tag circuit and deactivator |
| 03/23/1994 | CN2159596Y Wireless alarm against being lost and stolen |
| 03/23/1994 | CN2159595Y Infrared detector for human body |
| 03/23/1994 | CN2159594Y Thief alarm in courtyard |
| 03/23/1994 | CN2159593Y Sticky reminder |
| 03/22/1994 | US5296707 Apparatus for detecting movement of heat source |
| 03/17/1994 | WO1994006104A1 An electro-magnetic security/surveillance equipment |
| 03/17/1994 | DE4242549C1 Intruder detector for opening window - incorporating glass breakage detector and transformer monitoring window position |
| 03/16/1994 | EP0587075A1 Infrared wide-angle single lens for use in an infrared optical system |
| 03/16/1994 | CN2159046Y Anti-theft alarm |
| 03/16/1994 | CN1083956A Sound-light anti-theft apparatus structure with lighting function |
| 03/15/1994 | US5294290 Computer and electromagnetic energy based mass production method for the continuous flow make of planar electrical circuits |
| 03/15/1994 | CA1327841C Load isolated article surveillance system and antenna assembly |
| 03/11/1994 | CA2104245A1 Lock set with self-contained door alarm and annunciator system |
| 03/10/1994 | DE4228629A1 Night time video monitoring system - uses pulsed IR spotlight to illuminate object and processes obtained camera image |
| 03/09/1994 | EP0585891A1 Desensitizing apparatus for electromagnetic article surveillance system |
| 03/09/1994 | EP0354225B1 Process for adapting the frequency band of an oscillating circuit made from a metal-plastic-metal sandwich foil useful as an identification label |
| 03/09/1994 | CN2158554Y Multi-function sensing automatic locking device |
| 03/09/1994 | CN2158553Y Infrared theft or intruder alarm |
| 03/09/1994 | CN1083608A Self-checkout, point-of-trasaction system including removable, electro-optically coded surveillance tags |
| 03/08/1994 | US5293427 Eye position detecting system and method therefor |
| 03/08/1994 | US5293243 Image splitter for security cameras |
| 03/08/1994 | US5293115 Method and system for sensing removal of a utility meter from its socket |
| 03/08/1994 | US5293095 Air pressure variation detector |
| 03/08/1994 | US5293039 Sandwiched fiber-optic pressure detector |
| 03/03/1994 | WO1994004978A1 Signal processing method and apparatus |
| 03/03/1994 | DE4229257A1 Security surveillance system with alarm and image recording functions - providing undetected recording or obvious recording with deterrent effect under control of programmable central unit |
| 03/03/1994 | DE4229149A1 Security adaptor for attaching to electrical or photographic goods - has fixing plate attached to base of adaptor for securing it to protected item |
| 03/02/1994 | EP0585079A1 Signal processing method and apparatus |
| 03/02/1994 | EP0585033A1 Automatic surveillance camera equipment and alarm system |
| 03/02/1994 | EP0584540A1 Device for monitoring the connection of an electric apparatus with a power source |
| 03/02/1994 | EP0584261A1 Portable anti-theft device |
| 03/02/1994 | EP0437590B1 Antitheft contact sensor |
| 03/02/1994 | CN2158115Y Multi-purpose alarming device |
| 03/02/1994 | CN2158114Y Anti-theft warming door |
| 03/02/1994 | CN1083304A High-voltage safety protection network |
| 03/01/1994 | US5291205 Radio frequency automatic identification system |
| 03/01/1994 | US5291180 LC structure useful in radio frequency security systems |
| 03/01/1994 | US5291020 Method and apparatus for detecting direction and speed using PIR sensor |
| 03/01/1994 | US5290066 Magnetic label and use thereof |
| 03/01/1994 | US5289785 Security enclosures |
| 02/24/1994 | DE4227865A1 Home security system with alarm activated by broken wire - deactivates magnet and tilts mercury@ switch when current is cut off and activates alarm |
| 02/23/1994 | CN2157552Y Joint protection burglar alarm |
| 02/22/1994 | US5289559 Cable security apparatus |
| 02/22/1994 | US5289275 Surveillance monitor system using image processing for monitoring fires and thefts |
| 02/22/1994 | US5289159 Automobile alarm circuit responsive to multi-frequency phenomena |
| 02/17/1994 | WO1994003880A1 A security system |
| 02/17/1994 | DE4226892A1 Video monitoring system with improved sensor system - moves sensor to cover sections of monitored field to provide improved range |
| 02/17/1994 | DE4226654A1 Antitheft label with oscillating circuit - uses coil and capacitor welded in pocket of transparent foil of plastics material |
| 02/17/1994 | DE4226543A1 Acoustic alarm system for motor vehicles using echo signals - generated by applying signal to internal passenger compartment with each subjected to spectral analysis and comparison with reference |
| 02/16/1994 | EP0583195A1 Alarm signal elaboration device |
| 02/16/1994 | EP0582941A1 A temperature distribution measurement apparatus |
| 02/16/1994 | EP0582733A1 A device for monitoring whether a door or window, for example of a building or vehicle, is open or closed |
| 02/16/1994 | CN2156546Y Electronic rob-proof alarm device |
| 02/16/1994 | CN2156545Y Multi-purpose composite theft-proof alarm device |
| 02/16/1994 | CN2155719Y Four-protection safety box |
| 02/15/1994 | US5285734 Security enclosures |
| 02/10/1994 | DE4226237A1 Identification label for books - has label integrated into structure by sandwiching between cover layers or between the edges of pages and book spine covering |
| 02/09/1994 | CN2155598Y Warning device for automatic taking photoes |
| 02/09/1994 | CN2155597Y Moving target detector (head) |
| 02/09/1994 | CN2155596Y Theft-proof intelligent alarm mounted to the door or the window |
| 02/09/1994 | CN2155595Y Theft-proof alarm for many users |
| 02/08/1994 | US5285195 Electric fence monitoring apparatus indicating electrical energization |
| 02/08/1994 | US5285194 Electronic article surveillance system with transition zone tag monitoring |
| 02/08/1994 | US5285191 LC marker construction useful as an electromagnetically interrogatable transponder means |