| Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025) |
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| 06/16/1994 | DE4242186A1 Theft-prevention device for electronic audio appts., e.g. car radio - compares security codes representing product-specific value of electronic appts. and shuts down appts. when codes do not match |
| 06/15/1994 | EP0601506A1 Articles anti-theft method and device |
| 06/15/1994 | CN2169167Y Electronic digital coded clock |
| 06/15/1994 | CN2169166Y Electronic alarm against thief |
| 06/14/1994 | US5321412 Antenna arrangement with reduced coupling between transmit antenna and receive antenna |
| 06/14/1994 | US5321396 Indexing of audio/video data |
| 06/14/1994 | US5321390 Sensor switch |
| 06/09/1994 | WO1994012957A1 Detection tag |
| 06/09/1994 | WO1994012956A1 Portable anti-theft device |
| 06/09/1994 | DE4241277A1 Electronic alarm system preventing object removal - evaluates signal received from transmitter attached to protected object to activate alarm |
| 06/09/1994 | DE4241006A1 Video monitoring device transmitting signals to central surveillance station - processes video camera images to adjust transmitted image repetition rate dependent on image quality required |
| 06/08/1994 | EP0600764A1 Tensioning device for supply and coaxial cables of a camera movable in a video surveillance tunnel |
| 06/08/1994 | EP0599963A1 A method of encoding and decoding a glassy alloy strip to be used as an identification marker. |
| 06/08/1994 | CN2168300Y Switch-type alarm |
| 06/08/1994 | CN2168299Y Transmitter for alarming signal |
| 06/08/1994 | CN2168055Y Hidden-type safety door |
| 06/07/1994 | US5319501 Magnetic recording and reproducing apparatus which records analog time-base-compressed audio signals along with video signals |
| 06/07/1994 | US5319362 Security system with security access database distributed among individual access devices |
| 06/01/1994 | EP0599635A1 Electronic combination lock with time delay |
| 06/01/1994 | EP0599434A1 Method and circuit for electronically marking of articles |
| 06/01/1994 | EP0599267A1 Sensing cable |
| 06/01/1994 | EP0598988A1 EAS system with alternating on/off transmitter operation and loop antenna |
| 06/01/1994 | DE4239846A1 Equipment for producing thief-proof security labels - involves silicon paper layer on which hard-magnetic metal strip and cover layer are adhered |
| 06/01/1994 | CN2167417Y 电子报警器 Electronic alarm |
| 06/01/1994 | CN2167416Y Sound and light type alarm for theft-proof |
| 06/01/1994 | CN2167415Y Alarm for prevention of damage |
| 06/01/1994 | CN2167414Y Multi-function self-guard box |
| 06/01/1994 | CN1087435A Multifunctional alarm |
| 05/31/1994 | US5317620 Infrared alarm system |
| 05/31/1994 | US5317304 Programmable microprocessor based motion-sensitive alarm |
| 05/31/1994 | US5317303 Batteryless sensor used in security applications |
| 05/26/1994 | WO1994011833A1 Monitoring module |
| 05/26/1994 | DE4238930A1 Positional change or movement detector for detonating mine or triggering alarm - has closed chamber into which project edge-contacts of double-sided PCB, and detects breaking and re-making of contacts caused by conductive sphere rolling within chamber |
| 05/26/1994 | CA2109757A1 Sensing cable |
| 05/25/1994 | EP0598630A1 Light curtain system with individual beam indicators and method of operation |
| 05/25/1994 | EP0598624A1 Detection of multiple articles |
| 05/25/1994 | EP0598528A2 Identification system using magnetic coupling |
| 05/25/1994 | CN2166491Y Anti-theft alarm with prealarming process |
| 05/25/1994 | CN2166490Y Induction automatic alarming electrical hitting anti-theft device |
| 05/25/1994 | CN2166489Y Radio monitoring call anti-theft alarming device |
| 05/25/1994 | CN2166488Y Non-explosive infrared radio anti-theft alarming device |
| 05/25/1994 | CN2166487Y Dynamic induction sensor |
| 05/25/1994 | CN2166486Y Anti-theft leather handbag |
| 05/25/1994 | CN2166485Y Detecter for motion body |
| 05/25/1994 | CA2105597A1 Electronic combination lock with time delay feature to control opening |
| 05/24/1994 | US5315434 Infrared-transmissive lens and human body detecting sensor using the same |
| 05/24/1994 | US5315290 Cart theft prevention system |
| 05/24/1994 | US5315285 Alarm system for sensing and vocally warning a person approaching a protected object |
| 05/24/1994 | US5315096 Deactivator for resonance labels |
| 05/19/1994 | DE4338554A1 Non-contact electronic identification tag - has switchable array of passive detection and burn-out resonator elements, which receive burn-out frequency for irreversibly changing state of resonator for coding |
| 05/19/1994 | DE4336128A1 Reflective sensing unit for objects recognition and microcontroller processing - with output voltage compared with limit voltage valves that can be adjusted using counting cycle performed by processor |
| 05/19/1994 | DE4238588A1 Back-up voltage supply for vehicle or house security alarm - automatically switched in upon loss of normal voltage supply to maintain security alarm function |
| 05/19/1994 | DE4238275A1 Prevention of robbery or assault esp. on taxi-driver - transferring compressed image of passenger, taken by video camera having wide-angle objective and located in rear-view mirror by radio to remote location for storage and retrieval and decompression in emergency |
| 05/19/1994 | DE4238145A1 Method of producing safety labels - involves sticking strip of hard magnetic metal and silicon paper onto support film and punching holes before sticking light magnetic strip and laminating before final label stamping |
| 05/18/1994 | CN2165488Y Fish pond burglar alarm apparatus |
| 05/18/1994 | CN2165487Y Electronic burglar alarm device |
| 05/18/1994 | CN2165486Y Domestic electronic burglar alarm |
| 05/17/1994 | US5313306 Omniview motionless camera endoscopy system |
| 05/17/1994 | US5313192 Marker for use in an article surveillance system |
| 05/17/1994 | US5313060 Multi-sensor doubled row direction sensitive counting and switching device |
| 05/11/1994 | WO1994010663A1 Rf tagging system and rf tags and method |
| 05/11/1994 | EP0412137B1 Magnetic materials for security applications |
| 05/10/1994 | US5311168 Lock set with self-contained door alarm and annunciator system |
| 05/10/1994 | US5311024 Lens arrangement for intrusion detection device |
| 05/05/1994 | DE4236618A1 False alarm prevention device for infrared movement detector - has processor which generates alarm control signal only with occurrence of signal from external light sensor, when path of electrical signals from infrared detector deviates from preset course |
| 05/04/1994 | EP0595709A1 Anomaly surveillance device |
| 05/04/1994 | EP0595549A2 Radio frequency baggage tags |
| 05/04/1994 | EP0594714A1 Antipilferage markers |
| 05/04/1994 | EP0290548B1 Digital image acquisition system |
| 05/04/1994 | CN2164081Y Loss-proof theft alarm for boxes and bags |
| 05/04/1994 | CN2164080Y 报警卡 Alarm Card |
| 05/04/1994 | CN2164079Y Simple burglar alarm |
| 05/04/1994 | CN1086332A Multifunction door bell |
| 05/03/1994 | US5309147 Motion detector with improved signal discrimination |
| 05/03/1994 | US5309146 Room occupancy indicator means and method |
| 05/03/1994 | US5309144 Proximity sensing security system |
| 05/03/1994 | US5308985 Wide-angle passive infrared radiation detector |
| 04/28/1994 | WO1994009529A1 Cable for use as a distributed antenna |
| 04/28/1994 | WO1994009462A1 Submarine gas alarm system |
| 04/28/1994 | WO1994009172A1 IMPROVED HARMONIC MARKERS MADE FROM Fe-Ni BASED SOFT MAGNETIC ALLOYS HAVING NANOCRYSTALLINE STRUCTURE |
| 04/28/1994 | CA2145745A1 Improved harmonic markers made from fe - ni based soft magnetic alloys having nanocrystalline structure |
| 04/27/1994 | EP0594324A2 Theft-protection device providing force-sensitive tamper detection |
| 04/27/1994 | EP0378661B1 Automatic cash register |
| 04/27/1994 | CN2163409Y Visitor's coming sounder |
| 04/27/1994 | CN2163408Y Multifunctional anti-theft automatic alarm |
| 04/21/1994 | DE4235042A1 Printed label to prevent theft of goods - includes detectable substance in colour or ink which can be sensed by anti-theft device |
| 04/20/1994 | EP0593131A1 Combined electronic person admission control system and person search system, suitable in particular for use in winter sports areas |
| 04/20/1994 | EP0593043A1 Wire mesh with electric monitoring |
| 04/20/1994 | EP0592781A1 Article surveillance system with frequency hopping |
| 04/20/1994 | EP0592780A2 Eas tag with mechanically vibrating magnetic elements and improved housing and method of making same |
| 04/20/1994 | CN2162682Y Joint-family warning device |
| 04/19/1994 | US5304983 Multiple pulse responder and detection system and method of making and using same |
| 04/19/1994 | US5304982 Apparatus and method for detecting magnetic electronic article surveillance markers |
| 04/19/1994 | CA1328683C Deactivatable frequency-dividing-transponder tag |
| 04/17/1994 | CA2099732A1 Eas tag with mechanically vibrating magnetic element and improved housing and method of making same |
| 04/14/1994 | WO1994008321A1 Method and apparatus for global position responsive security system |
| 04/14/1994 | WO1994008258A1 Apparatus and a method for classifying movement of objects along a passage |
| 04/14/1994 | CA2146427A1 Method and apparatus for global position responsive security system |
| 04/13/1994 | EP0592191A1 Activation circuit |
| 04/13/1994 | EP0592156A1 Frequency-dividing-transponder tag |