US PATENT SUBCLASS 315 / 159
.~ Electric switch controlled by the radiant energy responsive device


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315 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS

149  DF  WITH RADIANT ENERGY SENSITIVE CONTROL MEANS {8}
159.~ Electric switch controlled by the radiant energy responsive device


DEFINITION

Classification: 315/159

(under subclass 149) Systems provided with an electrically operated circuit controlling switch whose operation is controlled by the radiant energy sensitive means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

313, and indented subclasses, and subclass 362, and the subclasses specified in the notes to the definition of those subclasses for other systems which include a switch in the supply circuit of the load device.

SEE OR SEARCH CLASS

361, Electricity: Electrical Systems and Devices,

173+, for photocell controlled relay circuits.