US PATENT SUBCLASS 315 / 134
.~ Radiant energy responsive control type


Current as of: June, 1999
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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

129  DF  WITH SIGNAL, INDICATOR, OR ALARM {5}
134.~ Radiant energy responsive control type


DEFINITION

Classification: 315/134

(under subclass 129) Systems provided with a device sensitive to the radiant energy generated by the load device for controlling the operation of the signal, indicator, or alarm means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

149, and indented subclasses, for systems not having indicators, etc., provided with a radiant energy sensitive device for controlling the operation of the load device.

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250, Radiant Energy,

200+, and the classes and subclasses specified in the Notes thereto for photocell control electric circuits and photocell apparatus.

337, Electricity: Electrothermally or Thermally Actuated Switches, 298+, for thermally responsive electric switches.