3747104 is referenced by 28 patents and cites 4 patents.

A plurality of self powered, normally silent alarm transmitters are coupled to respective checking points of a distribution network by means of contingency sensitive switches. A receiver continuously monitors the correlated network section within the transmission range of a number of these transmitters to detect the presence of a signal and cooperates with a location finding means adapted to provide, from the received signal, information about location of the active transmitter in the network.

Supervisory system for detection and location of contingencies
Application Number
Publication Number
Application Date
December 13, 1971
Publication Date
July 17, 1973
Pansini Anthony J
Long Island Lighting Company
G01s 05/02
H02H 01/00
G01S 01/00
G01S 01/02
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