Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 13 - Burglar, theft, or intruder alarms
Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025)
11/1993
11/24/1993CN2147598Y Long-distance wire monitoring and controlling theft-proof alarm
11/24/1993CN2147597Y Vibration sensoring alarm cable
11/23/1993US5264829 Method and apparatus for theft detection using digital signal processing
11/23/1993US5264824 Audio emitting tread mat system
11/18/1993EP0569686A1 Surveillance apparatus comprising transmitter, receiver and signal processing circuit
11/17/1993CN2146746Y Multi-functional wireless anti-theft device for guards
11/16/1993US5262885 Control circuit and data transmission device provided with such a circuit
11/16/1993US5262869 Apparatus and method for monitoring a CCTV camera
11/16/1993US5262647 Infrared detector with pyroelectric detector element and chopper control circuit
11/16/1993US5262639 Fiber optic cable monitoring method and apparatus including moisture detection and bending loss detection
11/11/1993WO1993022754A1 Tracking system
11/11/1993WO1993022751A1 A method of making a flexible closure incorporating an alarm system
11/11/1993DE4215272A1 Transmitter, receiver and circuit for photoelectric intruder detection - evaluates time difference between zero-crossings of signals from photodetector output shaper and modulation-oscillator-driven Schmitt trigger
11/10/1993CN2145532Y Anti-theft satchel
11/09/1993US5260853 Antenna housing assembly with interlocking members
11/09/1993US5260690 Article removal control system
11/03/1993EP0568137A1 A mounting structure for an electrical apparatus having a device indicating removal of same
11/03/1993EP0567717A1 Optoelectronic barrier
11/03/1993EP0567593A1 Method and apparatus for enhancing hygiene
11/03/1993CN2145413Y Door bell cabable as anti-theft siren on night
11/02/1993US5258837 Multiple security video display
11/02/1993US5258744 Annunciator apparatus for monitoring electrical connections
11/02/1993US5258743 Piezoelectric motion sensor
11/02/1993US5258609 Wide field of view optical element having plural reflectors of different widths
10/1993
10/28/1993WO1993021736A1 Image splitter for security cameras and the like
10/28/1993WO1993021614A1 System for surveillance of a fixed or movable objet
10/28/1993DE4211873A1 Surveillance device for display window, showcase - gives alarms on interruption of optical pulse reflection from window having non-reflected portion exposed in its open position
10/27/1993EP0567080A1 Optical information storage disk for use with electronic article surveillance systems
10/27/1993EP0566667A1 Method for identifying magnetic characteristics of magnetic elements
10/27/1993EP0278955B1 Motion detection apparatus employing information contained in the frequency spectrum of a television signal
10/27/1993CN2144837Y Multichannel code wireless alarm device
10/26/1993US5257011 Data altering means for multi-memory electronic identification tag
10/26/1993US5257010 Process for the deactivation of a reasonance label and circuit arrangement for the execution of the process
10/26/1993US5257009 Reradiating EAS tag with voltage dependent capacitance to provide tag activation and deactivation
10/20/1993EP0565830A2 Method and apparatus for user control by deriving next states of a process from a current state and by providing a visual presentation of the derived next states
10/20/1993CN2144329Y Multipurpose burglar alarm
10/20/1993CN2144316Y Safety lens
10/19/1993US5254974 For deactivating shoplifting detection labels
10/19/1993US5254973 Security circuit and modular devices therefor
10/19/1993US5254972 Window sealing kit
10/19/1993US5254897 Activation circuit for battery-operated security alarm detection system
10/19/1993US5253821 Security magnetic tape cartridge for use in electronic article surveillance systems
10/14/1993WO1993020655A1 Improved security protection system and method
10/14/1993WO1993020459A1 A method and a device for anti-theft marking of office equipment, especially computers
10/14/1993DE4212114A1 Anti-theft electronic alarm system for movable objects - has battery-powered transmitter with built in sensor fixed to object that transmit signal to remote receiver that can also control alarm
10/13/1993EP0565481A1 Label detection apparatus
10/13/1993EP0564668A1 Dogging element
10/13/1993EP0564556A1 Device for protecting objects, in particular works of art
10/13/1993EP0349565B1 Alarm apparatus, preferably in a window structure
10/13/1993CN2143798Y Infrared radio waiting machine
10/13/1993CN2143797Y Anti-theft alarm for suitcase and bag
10/13/1993CN2143796Y Cipher alarm anti-theft suitcase handle
10/12/1993US5253070 System and method for automatically detecting a variation of video information
10/12/1993US5252948 Detector; alarm signal
10/12/1993US5252144 Heat treatment process and soft magnetic alloys produced thereby
10/11/1993CA2093179A1 Security device for attachment to the rails of a movable door or window
10/07/1993DE4311210A1 Combined plastics lock mechanism and alarm system - uses two spaced metal strips in alarm current circuit brought into contact upon damage to lock
10/06/1993EP0563516A2 Optical barrier for detecting moving objects
10/05/1993US5251027 Telephoto sensor trigger in a solid state motion analysis system
10/05/1993US5250927 Inside mounting door stop and alarm
10/03/1993CA2071727A1 Infrared alarm system
09/1993
09/30/1993WO1993019467A1 Detecting scene changes
09/30/1993WO1993019385A1 A device for and method of surveillance of a space
09/30/1993DE4303388A1 Closed from surveillance system - monitors opening or destruction of doors or windows and movement of people in room and sets off alarm
09/29/1993EP0562948A1 Housing assembly for housing a surveillance television camera
09/29/1993EP0562891A1 Optical fiber support for pressure detector
09/29/1993EP0562491A1 Anti-theft device for valuable products such as compact discs or the like
09/29/1993EP0550443A4 Security tag for compact disc storage container
09/29/1993EP0539565A4 Omniview motionless camera orientation system
09/28/1993US5249045 Apparatus and methods for automated observation of three-dimensional objects
09/28/1993US5248958 Hertzian-wave intrusion detetor
09/27/1993CA2091480A1 Enhanced optical fibre pressure detecting device
09/24/1993CA2092163A1 Anti-theft device for high value products such as compact discs and the like
09/23/1993DE4208334A1 Anti-theft protection of portable articles in public places - involves completion or interruption of electrical alarm circuit by withdrawal of article or package from its holder
09/22/1993EP0561560A1 Frequency divider with variable capacitance
09/22/1993EP0561559A1 Electrically-and-magnetically-coupled, batteryless, portable frequency divider
09/22/1993EP0561062A1 Method and electromagnetic security system for detection of protected objects in a surveillance zone
09/22/1993EP0345361B1 Infrared detector
09/22/1993CN2142591Y Theft-deterrent alarm device with railing net or railing line
09/22/1993CN2142577Y Infrared ray projector
09/22/1993CN2142492Y Electronic theft-deterrent door
09/21/1993US5247279 Vehicle security system with gear shift position sensor and door interlock
09/21/1993US5247270 Dual leaky cables
09/21/1993US5246522 Method of making deactivatable electronic article surveillance markers
09/19/1993CA2091753A1 Frequency divider with variable capacitance
09/18/1993CA2091790A1 Method and electromagnetic security system for detection of protected objects in a surveillance zone
09/16/1993WO1993018493A1 Method of making a radio-frequency detection label with a minimum number of electronic components
09/16/1993WO1993018492A1 Infrared intrusion sensor
09/16/1993WO1993018265A1 Detecting device
09/16/1993WO1993017629A1 Device for assisting childbirth
09/16/1993DE4306719A1 Self=learning alarm system for object monitoring - contains filtered image sensor and ultrasonic sensor used in combination
09/16/1993CA2131887A1 Device for assisting childbirth
09/15/1993EP0560145A1 Alarm device
09/15/1993EP0466739B1 Monitoring system for monitoring the panes of glass of a space, for example a motor vehicle interior
09/15/1993CN2142213Y Radio automatic burglar alarm
09/15/1993CN1076292A Computerized watchdog
09/15/1993CN1076291A Multipurpose burglar alarm for fishpond
09/14/1993US5245330 Microprocessor-controlled apparatus with improved disabling
09/14/1993US5245317 Article theft detection apparatus
09/14/1993US5245316 Identification marking system for objects
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