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Class Information
Number: 340/652
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Condition of electrical apparatus > Breaking of circuit continuity
Description: Subject matter where the condition monitored is the integrity of a circuit; e.g., power or communication lines.

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8643501 Metering apparatus Feb. 4, 2014
8570181 Method and apparatus for supervisory circuit for ground fault circuit interrupt device Oct. 29, 2013
8564922 System and method for protecting telecommunications device from power faults Oct. 22, 2013
8514093 Signaling device for detecting an object Aug. 20, 2013
8508352 Hardware continuity loop for preventing vehicle misappropriation Aug. 13, 2013
8493224 Bowden cable wear detection in a tube clamp system for medical fluids Jul. 23, 2013
8487763 Breach detection system for containers Jul. 16, 2013
8446285 Methods and apparatus for controlling and testing a notification appliance circuit May. 21, 2013
8411073 System and method for detecting display disconnection Apr. 2, 2013
8373572 Battery assembly with alarm Feb. 12, 2013
8358218 Point of sale terminal having enhanced security Jan. 22, 2013
8330606 Secure data entry device Dec. 11, 2012
8310371 Power supply protection device Nov. 13, 2012
8289167 Apparatus for securing a land surveyor'S mark based on the use of a radio frequency identifier tag Oct. 16, 2012
8279075 Card slot anti-tamper protection system Oct. 2, 2012
8212683 Metric for planned downtime Jul. 3, 2012
RE43415 Anti-theft method for detecting the unauthorized opening of containers and baggage May. 29, 2012
8164466 Apparatus and method for detecting a communication abnormality in a multi-type air conditioner Apr. 24, 2012
8125345 Method and apparatus for loose wiring monitor Feb. 28, 2012
8120504 Circuit for indicating operating status of computer hardware devices Feb. 21, 2012
8111155 Detection and control of pests Feb. 7, 2012
8079728 Indicator test switch for downlight lighting device and bracket therefor Dec. 20, 2011
RE42777 Anti-theft method for detecting the unauthorized opening of containers and baggage Oct. 4, 2011
8013752 Weighted output sensor Sep. 6, 2011
8000172 Time control apparatus and method of managing time within said time control apparatus Aug. 16, 2011
7990278 System and method for detecting power supply error of electronic device and electronic device Aug. 2, 2011
7978089 Method and apparatus for ground fault detection Jul. 12, 2011
7924166 Nuclear leakage detection system using wire or optical fiber Apr. 12, 2011
7915982 Device for detecting the three states of a circuit breaker Mar. 29, 2011
7898413 Anti-tamper protected enclosure Mar. 1, 2011
7899630 Metering device with control functionality and method thereof Mar. 1, 2011
7889091 Emergency device actuator absence notification system and method therefor Feb. 15, 2011
7880631 Coordinate-based system, method and computer program product for disabling a device Feb. 1, 2011
7847701 Predicting cable failure through remote failure detection of error signatures Dec. 7, 2010
7843358 Power failure alarm Nov. 30, 2010
7821754 Circuit arrangement for producing a defined output signal Oct. 26, 2010
7812734 Alarm system employing existing conductive aspect of copper lines as well as optional pressure switch sensor for triggering a copper theft event Oct. 12, 2010
7772973 Burglarproof purse Aug. 10, 2010
7772974 Tamper evident seal system and method Aug. 10, 2010
7755502 Anti-tamper electronic obscurity using E-fuse technology Jul. 13, 2010
7731686 Devices, systems and methods for medicament delivery Jun. 8, 2010
7719429 Detection and control of pests May. 18, 2010
7705741 Detection of a broken wire between power sourcing equipment and a powered device Apr. 27, 2010
RE41172 System and method to enhance security of shipping containers Mar. 30, 2010
7683796 Open wire detection system and method Mar. 23, 2010
7683797 Damage detection/locating system providing thermal protection Mar. 23, 2010
7659817 Security device with perimeter alarm Feb. 9, 2010
7616116 Electronic tamper evident seal Nov. 10, 2009
7561059 Anti-tamper electronic obscurity using E-fuse technology Jul. 14, 2009
7557723 System and method for evaluating ground-fault circuit interrupters Jul. 7, 2009

1 2 3 4 5 6 7 8

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