Security system with correlated signalling to selected satellite stations
Patent 4692742 Issued on September 8, 1987. Estimated Expiration Date: 
October 21, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 21, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3925763 Early flood warning system Alarm notification apparatus Refrigeration monitor system with remote signalling of alarm indications Patent #: 4482785 InventorsApplicationNo. 06/789568 filed on 10/21/1985US Classes:340/539.22, Having plural distinct sensors (i.e., for surrounding conditions)340/524, Condition position indicator340/531, With particular coupling link340/534, Coded message340/536, Noninterfering379/40, Automatic dialing379/49, Central station with plural substations379/51With automatic dialing or transmission of recorded audio messageExaminersPrimary: Crosland, Donnie L.International ClassG08B 25/10 (20060101)AbstractA security system wherein a plurality of locations are monitored by sensors which transmit alarm signals to a central control station by radio or telephone, each alarm signal being encoded to identify the particular sensor location and alarm condition. The control station comprises a computer which correlates the received alarm signals with information stored in the computer memory to identify which of a plurality of satellite stations are to be notified of a particular alarm condition at a particular monitored location, what correlated information is to be transmitted to such satellite station, and whether to effect such transmission by radio or telephone. The computer actuates a radio or telephone transmitter in the control station to transmit correlated signals to the appropriate satellite stations, and may also actuate a speech synthesizer so that such signals may be transmitted as synthetic speech.Other References
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