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| Number | Title | Issue Date |
| 7612654 | System and method for circuit protector monitoring and management A system and method for circuit protector monitoring and management includes at least one circuit protector defining an interruptible current path therethrough upon an occurrence of specified operating condition in a circuit; a status element associated with the cir... | 11/03/2009 |
| 7576635 | Circuit protector signal transmission, methods and system A circuit protector signal transmission system, kit and method involves at least one circuit protector defining an interruptible current path therethrough upon an occurrence of specified operating conditions in a circuit, a status element associated with the circuit... | 08/18/2009 |
| 7391299 | Circuit protector monitoring and management system user interface method, system and program A user interface, method system and program for circuit protector management in an electrical system. ... | 06/24/2008 |
| 6895349 | Gate comparator A gate comparator control panel, in accordance with the subject invention, allows a user to define up to four different gate regions that may exist on any of the live waveforms, maths waveforms, or REF waveforms. A menu for each gate controls the position of each ga... | 05/17/2005 |
| 6114955 | System and method for antenna failure detection In a wireless security system, the system controller includes one or more antennas for reception of signals from remote sensor-transmitter units. To detect antenna failure, the system controller generates a test signal with a known parameter and transmits... | 09/05/2000 |
| 5654691 | Auxiliary backup device of burglary alarm system The present invention provides an auxiliary backup device of burglary alarm system, connected with an alarm output and an auxiliary power output of a burglary control panel and an alarm device, comprises in combination an electrical circuit having a relay... | 08/05/1997 |
| 5103214 | Auxiliary alarm The present invention comprises an audio alarm for providing a back-up acoustic output in response to a sensed parameter including a first audio alarm circuit having a first transducer for providing a first acoustic output in response to the sensed parame... | 04/07/1992 |
| 4949052 | Clock signal generator having back-up oscillator substitution A clock signal generator comprising a first oscillator which normally supplies clock pulses to the output of the clock signal generator, a first counter for counting the pulses generated from the first oscillator and producing a carry signal after countin... | 08/14/1990 |
| 4843378 | Failure alarm device for an appliance The failure alarm device for an appliance of the present invention include a first alarm for indicating an abnormality if an abnormality should occur in the appliance main body, and a second alarm for indicating an abnormality if an abnormality should occ... | 06/27/1989 |
| 4706271 | Communication lines with terminate and leave capability-DC alarm bridge Apparatus for connecting in series a plurality of communication line pairs, typically direct connected security loops used by alarm companies for monitoring customer's facilities. A bridge with pairs of bridge terminals and switches for connecting bridge ... | 11/10/1987 |
| 4335413 | Circuit interrupter with remote indicator and power supply A circuit breaker includes a microcomputer-based trip unit, and a remote indicator unit and power supply. The trip unit includes an optically-coupled data output system and means for generating a pulse code containing cause-of-trip information and excess ... | 06/15/1982 |
| 4234873 | Alarm installation with a number of self powered indicating elements An alarm system includes a number of self powered indicating elements each with an integral warning device. Each indicating element includes a control circuit which may comprise a transistor switching circuit, transistor oscillator or part of a wheatstone... | 11/18/1980 |
| 4119815 | Central station system including secondary communication path established through commercial telephone network A central station system in which the central station is normally connected to one or more remotely located bridging points by a dedicated communication path, each bridging point having a plurality of output ports to which one or more remote station devic... | 10/10/1978 |
| 4040013 | Citizens alarm system A combined police and fire alarm system has provision for voice communication between street corner boxes and a central station via existing telegraphic cables. The boxes automatically transmit identification signals to the central station upon being acti... | 08/02/1977 |
| 3982242 | McCulloh receiver A receiver is disclosed connected to a McCulloh loop, having an N or line side and a G or ground side, for receiving coded alarm signals from a plurality of McCulloh transmitters. The receiver is especially adapted for supplying the alarm signals to a com... | 09/21/1976 |
