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)
03/1979
03/21/1979EP0001154A1 Shock and vibration responsive contact device incorporating two or more seismic elements
03/20/1979US4145715 Surveillance system
03/13/1979US4144530 Combined intrusion sensor line
03/13/1979US4144529 Remotely responsive motion detector
03/13/1979CA1050652A1 Multi-zone intrusion detection system
03/13/1979CA1050629A1 Burglar alarm
03/06/1979US4143368 Vehicle operator security system
03/06/1979CA1050133A1 Method of and apparatus for surveying an area
02/1979
02/27/1979US4142188 Method and apparatus for monitoring sound-conducting media
02/27/1979US4142187 Dual frequency alarm device using Doppler effect for sensing a moving object
02/20/1979US4141078 Library circulation control system
02/20/1979US4141008 Energy-responsive intruder detection system
02/13/1979US4139845 Flashlight burglar alarm apparatus
02/13/1979US4139844 Surveillance method and system with electromagnetic carrier and plural range limiting signals
02/13/1979US4139843 Alarm system
01/1979
01/30/1979USRE29896 Intrusion detection system
01/30/1979US4137521 Antenna alarm
01/23/1979US4136334 Timed alarming using logical inverters
01/23/1979CA1047093A1 Fire extinguisher cabinet
01/16/1979US4135185 RF loop intruder detection system
01/16/1979US4135184 Electronic theft detection system for monitoring wide passageways
01/16/1979US4135183 Antipilferage system utilizing "figure-8" shaped field producing and detector coils
01/16/1979US4134538 Process and apparatus for identification of objects
01/09/1979US4134110 Transceiver with skewed transducers for low close-in sensitivity
01/09/1979US4134109 Alarm system responsive to the breaking of glass
01/02/1979US4132987 Security system
01/02/1979CA1045732A1 Intruder detector system and method therefore
12/1978
12/26/1978US4131887 Intrusion alarm system utilizing the barking of a watchdog
12/26/1978US4131001 Method to prevent unauthorized use of cassette tape recorders and a device according to the method
12/19/1978US4130835 Electrical waveform analysis
12/19/1978US4130732 Remote alarm reset apparatus
12/19/1978US4130083 Activating mechanism for flashlamp article
12/19/1978US4130082 Flashlamp assembly for providing highly intense audible and visual signals
12/12/1978CA1044353A1 Intrusion detection system
11/1978
11/28/1978US4127771 Optical apparatus
11/14/1978US4125084 Fire extinguisher alarm
11/07/1978US4124847 Door alarm system
11/07/1978US4124841 Motion detection device
10/1978
10/31/1978US4123752 Burglar alarm
10/31/1978US4123749 Method and system for determining the presence of objects within a particular surveillance area, in particular for prevention of shoplifting
10/31/1978US4123748 Burglar alarms utilizing ultrasonic waves
10/24/1978US4122445 Breakage detector having a conductive bent metallic leaf spring therein
10/24/1978US4122437 Intrusion alarm control system
10/17/1978US4121201 Carrier current appliance theft alarm
10/17/1978US4121192 System and method for determining position and velocity of an intruder from an array of sensors
10/17/1978US4120389 Proximity sensor
10/10/1978US4120004 Surveillance system
10/03/1978US4118730 Scanning apparatus and method
10/03/1978US4118693 Method and apparatus for producing uniform electromagnetic fields in an article detection system
10/03/1978US4118692 Bag alarm device
10/03/1978CA1039824A1 Audible alarm device
09/1978
09/26/1978US4117479 Multi-mode intrusion alarm system
09/26/1978US4117468 Sound alarm for protecting briefcases and the like
09/26/1978US4117466 Beat frequency interference rejection circuit
09/26/1978US4117465 Alarm system for vending machines
09/26/1978US4117464 Microwave motion-detection apparatus employing a gunn oscillator in a self-detecting mode
09/26/1978US4117462 Ultrasonic transmitter for burglar alarm system
09/26/1978US4116615 Door-actuated activation means for flashlamp article
09/12/1978US4114147 Code combination property alarm system
09/12/1978US4114146 Ultrasonic wave watching device of moving object detecting type
09/05/1978US4112463 System for detecting a motion in the monitoring area of two or more television cameras
09/05/1978US4112420 Apparatus for detecting the breakage of an acoustically conductive medium
09/05/1978CA1038035A1 Microwave alarm
08/1978
08/29/1978US4110738 Anti-theft alarm with coded radio link
08/29/1978US4109606 Self-energized alarm device
08/22/1978US4109233 Proximity sensor
08/15/1978US4107660 Intrusion detection system
08/15/1978US4107659 Intrusion alarm system with improved air turbulence compensation
08/15/1978US4106427 Alarm system
08/15/1978CA1036686A1 Presence detecting system with self-checking
08/08/1978US4106006 Dual-frequency induction-keyed control circuit with keying network having variable resonant frequency
08/08/1978US4106003 Signal treatment circuit for burglar alarms
08/08/1978US4106000 Anti-theft device with disabling means
08/01/1978US4104622 Monitor actuating device and reusable fastener therefor
08/01/1978US4104618 Remote signaling system
08/01/1978US4103572 Unlatching tool for reusable security tag
07/1978
07/25/1978US4103299 Two-wire pilot device solid state control system
07/25/1978US4103294 Intruder deterrent apparatus and method
07/25/1978US4103293 Intrusion alarm apparatus
07/18/1978US4101876 Photo electric security system
07/18/1978US4101875 Multi-satellite intrusion alarm control system
07/11/1978US4100539 Burglar alarm for door knob
07/04/1978US4099207 Direct electronic fourier transforms of optical images
07/04/1978US4099168 Intrusion alarm and emergency illumination apparatus and method
06/1978
06/27/1978US4097853 Means for distinguishing motion from noise in an intrusion alarm system
06/27/1978US4097843 Warning device and receptacle adaptor
06/27/1978US4097025 Electronic fence surveillance apparatus
06/20/1978US4096474 Apparatus for detecting persons hidden in vehicles
06/13/1978US4095214 Electronic monitoring system and responder device
06/06/1978US4093943 Sequential power distribution circuit
05/1978
05/30/1978US4092641 Security interlock switch system for smoke detectors and the like
05/30/1978US4092636 Protective alarm system for window using reflected microwave energy
05/30/1978US4091660 Apparatus for detecting the breaking of a glass plate
05/23/1978US4091415 Method and apparatus for detecting temporal changes in an object
05/23/1978US4091371 Touch-responsive portable intrusion alarm
05/23/1978US4091367 Perimeter surveillance system
05/16/1978US4090183 Billfold anti-theft device
05/16/1978US4090182 Security system employing radio transmitter and receiver
05/16/1978US4090180 Vibration-responsive intruder alarm system
05/09/1978US4088989 Intrusion detection apparatus
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