Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1978-09-14
1980-11-04
Waring, Alvin H.
Communications: electrical
Condition responsive indicating system
With particular system function
340517, 179 1MN, 179 5P, G08B 2900
Patent
active
042323061
ABSTRACT:
A supervisory control system and apparatus used in a fire prevention system, a burglar alarm system, a remote control system, etc., in which progressive operation by continual selective signals is performed using a series of operating units in order to supervise and control each unit.
REFERENCES:
patent: 3662112 (1972-05-01), Martin
patent: 4138674 (1979-02-01), Humphries
Kabushiki Kaisha Kogen
Waring Alvin H.
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