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Class Information
Number: 340/514
Name: Communications: electrical > Condition responsive indicating system > With particular system function (e.g., temperature compensation, calibration) > Testing
Description: Subject matter where the operativeness of the system is determined at discrete times.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6288637 |
Fire protection system |
Sep. 11, 2001 |
| 6271751 |
Magnetic lock and status detection system and method therefor |
Aug. 7, 2001 |
| 6259363 |
Detector removal signalling device |
Jul. 10, 2001 |
| RE37255 |
Address setting means for fire detectors |
Jul. 3, 2001 |
| 6255945 |
Communication path integrity supervision in a network system for automatic alarm data communication |
Jul. 3, 2001 |
| 6252503 |
Method of monitoring a sensor device and sensor device and analysis unit with monitoring means |
Jun. 26, 2001 |
| 6246971 |
Testing asynchronous circuits |
Jun. 12, 2001 |
| 6239697 |
Fire alarm system |
May. 29, 2001 |
| 6208257 |
Inspection apparatus of an emergency exit light |
Mar. 27, 2001 |
| 6201472 |
Wireless communication system with increased dynamic range |
Mar. 13, 2001 |
| 6198399 |
Smoke detector test device and method for manufacture |
Mar. 6, 2001 |
| 6191698 |
Magnetic testing apparatus |
Feb. 20, 2001 |
| 6150936 |
Method and system for analyzing received signal strength |
Nov. 21, 2000 |
| 6140920 |
Optical transmission system element test |
Oct. 31, 2000 |
| 6127936 |
Apparatus for and method of providing an indication of the magnitude of a quantity |
Oct. 3, 2000 |
| 6107919 |
Dual sensitivity mode system for monitoring processes and sensors |
Aug. 22, 2000 |
| 6104287 |
Circulator reverse power alarm |
Aug. 15, 2000 |
| 6087933 |
Antenna switching for amplitude degradation during supervision and installation of wireless security systems |
Jul. 11, 2000 |
| 6078254 |
Suspended code for alarm system |
Jun. 20, 2000 |
| 6061638 |
Microprocessor-based battery tester system |
May. 9, 2000 |
| 6057770 |
Water leakage detection and flood prevention device |
May. 2, 2000 |
| 6040770 |
Communication path integrity supervision in a network system for automatic alarm data communication |
Mar. 21, 2000 |
| 6040765 |
Obstacle detection system built-in test method and apparatus |
Mar. 21, 2000 |
| 6034601 |
Method and apparatus for determining proper installation of alarm devices |
Mar. 7, 2000 |
| 6023222 |
Method of monitoring a plurality of control loops by regulation ratio monitoring |
Feb. 8, 2000 |
| 5966069 |
Exit sign self-testing system |
Oct. 12, 1999 |
| 5955866 |
Car battery charger/tester |
Sep. 21, 1999 |
| 5945829 |
Midpoint battery monitoring |
Aug. 31, 1999 |
| 5931961 |
Discovery of acceptable packet size using ICMP echo |
Aug. 3, 1999 |
| 5900828 |
Modemless transmitter for test vehicle tracking system |
May. 4, 1999 |
| 5898368 |
Test indicator control circuit for security alarm device |
Apr. 27, 1999 |
| 5881021 |
Quick charge capacitor powered non-interruptible wearable personal security alarm |
Mar. 9, 1999 |
| 5874895 |
Method and apparatus for testing operation of a sensor controlled device |
Feb. 23, 1999 |
| 5872512 |
Apparatus and method for reducing errors in a battery operated sensing circuit |
Feb. 16, 1999 |
| 5867091 |
Vehicle security system |
Feb. 2, 1999 |
| 5864286 |
Distributed intelligence alarm system having a two- tier monitoring process for detecting alarm conditions |
Jan. 26, 1999 |
| 5831524 |
System and method for dynamic adjustment of filtering in an alarm system |
Nov. 3, 1998 |
| 5828300 |
Alarm system with supervision controlled receiver parameter modification |
Oct. 27, 1998 |
| 5818334 |
Addressable devices with interface modules having electrically readable addresses |
Oct. 6, 1998 |
| 5815075 |
Fire dector including a non-volatile memory |
Sep. 29, 1998 |
| 5815066 |
Fire alarm safety silencing system |
Sep. 29, 1998 |
| 5801626 |
Alarm communications system with supervision signal RSSI analysis |
Sep. 1, 1998 |
| 5796347 |
Control of a device in an inaccessible location |
Aug. 18, 1998 |
| 5793293 |
Temperature sensing system for over-heat detection |
Aug. 11, 1998 |
| 5789098 |
Method of detecting external voltage source for disablement of battery conservation mode in a portable communications device |
Aug. 4, 1998 |
| 5790019 |
Emergency alarm system |
Aug. 4, 1998 |
| 5786761 |
Gate opening alarm with resetting disable means |
Jul. 28, 1998 |
| 5777550 |
High reliability instrument system |
Jul. 7, 1998 |
| 5764142 |
Fire alarm system with smoke particle discrimination |
Jun. 9, 1998 |
| 5751215 |
Fire finding apparatus |
May. 12, 1998 |
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