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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 |
| 4845475 |
Automatic testing of position sensing devices employing stored sensed position |
Jul. 4, 1989 |
| 4837508 |
Process and device for checking the operational state of a variable reluctance magnetic sensor and their application to automobile electronics |
Jun. 6, 1989 |
| 4827244 |
Test initiation apparatus with continuous or pulse input |
May. 2, 1989 |
| 4821022 |
Float assembly checking system |
Apr. 11, 1989 |
| 4816806 |
Diagnosis switch |
Mar. 28, 1989 |
| 4804942 |
Verifying automatic line integrity diagnostic (V.A.L.I.D.) apparatus and methods for intrusion detection systems |
Feb. 14, 1989 |
| 4800371 |
Freeze alarm |
Jan. 24, 1989 |
| 4785295 |
Optical media monitoring device |
Nov. 15, 1988 |
| 4777473 |
Alarm system incorporating dynamic range testing |
Oct. 11, 1988 |
| 4774510 |
Monitoring annunciator apparatus |
Sep. 27, 1988 |
| 4754261 |
Security system |
Jun. 28, 1988 |
| 4743886 |
Testing apparatus for intrusion detectors |
May. 10, 1988 |
| 4743887 |
Fault locating system and method |
May. 10, 1988 |
| 4742334 |
Single-wire loop alarm system |
May. 3, 1988 |
| 4728935 |
Integrity securing monitor and method for a security installation |
Mar. 1, 1988 |
| 4725818 |
Walk through test system |
Feb. 16, 1988 |
| 4721945 |
Simulated targets for detection systems |
Jan. 26, 1988 |
| 4694282 |
Security monitoring system |
Sep. 15, 1987 |
| 4693110 |
Method and apparatus for testing the operability of a probe |
Sep. 15, 1987 |
| 4692750 |
Fire alarm system |
Sep. 8, 1987 |
| 4688183 |
Fire and security system with multi detector-occupancy-temperature-smoke (MDOTS) sensors |
Aug. 18, 1987 |
| 4686641 |
Static programmable powerline carrier channel test structure and method |
Aug. 11, 1987 |
| 4684931 |
Capacitive sensing security system |
Aug. 4, 1987 |
| 4683459 |
Alarm system test annunciator |
Jul. 28, 1987 |
| 4682153 |
Fail-safe sensor system |
Jul. 21, 1987 |
| 4680582 |
Information reporting multiplex system |
Jul. 14, 1987 |
| 4675654 |
Alarm monitoring device |
Jun. 23, 1987 |
| 4667183 |
Keyboard hold-down functions for a multi-zone intrusion detection system |
May. 19, 1987 |
| 4661720 |
Occupancy sensor |
Apr. 28, 1987 |
| 4656615 |
Hydrophone array polarity test circuit |
Apr. 7, 1987 |
| 4656319 |
Alarm system tester |
Apr. 7, 1987 |
| 4652819 |
Proximity switch with continuously operable test circuit responsive to bipolar double pulses |
Mar. 24, 1987 |
| 4647914 |
Security apparatus and system |
Mar. 3, 1987 |
| 4647913 |
Self-diagnostic ultrasonic intrusion detection system |
Mar. 3, 1987 |
| 4639719 |
Apparatus for monitoring circuit integrity |
Jan. 27, 1987 |
| 4625198 |
Alarm system diagnostic apparatus |
Nov. 25, 1986 |
| 4618853 |
Fire detector |
Oct. 21, 1986 |
| 4612445 |
System for monitoring the operation of input circuits to a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines |
Sep. 16, 1986 |
| 4611193 |
Electric display device of a vehicle |
Sep. 9, 1986 |
| 4603325 |
Evaluation apparatus |
Jul. 29, 1986 |
| 4594692 |
Seismic signal generator |
Jun. 10, 1986 |
| 4590472 |
Analog signal conditioner for thermal coupled signals |
May. 20, 1986 |
| 4575710 |
Automatic testing system electrical transmitters |
Mar. 11, 1986 |
| 4567476 |
Method and circuit for optical and/or acoustic indication of the charge state of a battery or a storage battery |
Jan. 28, 1986 |
| 4555695 |
Fire alarm system |
Nov. 26, 1985 |
| 4554533 |
Method of and apparatus for the testing of warning systems |
Nov. 19, 1985 |
| 4542372 |
Data distribution apparatus |
Sep. 17, 1985 |
| 4536748 |
Process for protecting a remote monitoring system against sabotage and a system using this process |
Aug. 20, 1985 |
| 4533904 |
Combination smoke and burglar alarm |
Aug. 6, 1985 |
| 4525699 |
Electronic monitoring system with malfunction indicator |
Jun. 25, 1985 |
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