| Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025) |
|---|
| 05/04/1976 | US3955184 Passive infrared room intrusion detector |
| 04/20/1976 | US3952295 Alarm system for cargo box |
| 04/13/1976 | US3950746 Or intrusion detection system including spring-biased switching means |
| 03/30/1976 | US3947838 Intrusion alarm system |
| 03/30/1976 | US3947837 Security glazing and alarm system |
| 03/30/1976 | US3947835 Fence protection system |
| 03/23/1976 | US3946377 Method and apparatus to monitor conduction of sonic waves in an acoustically conductive medium |
| 03/23/1976 | US3946376 Multiple zone intrusion alarm system |
| 03/09/1976 | US3943503 Electronic intruder alarm apparatus |
| 03/09/1976 | US3943485 Alarm system for three-element windows |
| 03/09/1976 | US3942829 Reusable security tag |
| 03/02/1976 | US3942178 Intrusion detection system |
| 03/02/1976 | US3942176 Ultrasonic alarm system |
| 02/24/1976 | US3940733 Seismic surveillance system |
| 02/10/1976 | US3938125 Antipilferage system and marker therefor |
| 02/10/1976 | US3938124 Alarm system sensing device |
| 02/10/1976 | US3938121 Electrical wiring and alarm system |
| 02/10/1976 | US3938120 Talking door sentinel |
| 02/10/1976 | US3938044 Antenna apparatus for an electronic security system |
| 01/20/1976 | US3934156 Movement responsive control apparatus |
| 01/13/1976 | US3932870 On-line test circuit for intrusion alarm systems |
| 01/13/1976 | US3932857 Alarm system sensing device |
| 01/13/1976 | US3932856 Portable, gravity-actuated alarm for use with a window or door |
| 01/13/1976 | US3932718 Intrusion detector |
| 01/13/1976 | US3932703 Image motion and change transducers and systems controlled thereby |