Communications: electrical – Condition responsive indicating system – Specified housing
Patent
1979-02-08
1981-06-09
Waring, Alvin H.
Communications: electrical
Condition responsive indicating system
Specified housing
340 25, B60Q 102
Patent
active
042727669
ABSTRACT:
A radio operated remote control unit for attachment to a transmitter and having a second module attached to a transreceiver, which, through the use of a dual tone multi frequency signal, turns on the lights, or similar work, and maintains that status for a predetermined period of time. Also the electrical circuit employed to accomplish the said work.
REFERENCES:
patent: 1709377 (1929-04-01), Sperry
patent: 3121857 (1964-02-01), Lem et al.
Coles, Jr. Richard J.
Stucker Wesley G.
Carlson Carolyn
Carlson, Jr. J. P.
Coles Viola C.
Koch Darlene M.
Koch Robert H.
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