US PATENT SUBCLASS 361 / 177
.~.~.~.~ Plural light sensors

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

139  DF  CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES {7}
160  DF  .~ For relays or solenoids {11}
170  DF  .~.~ Condition responsive (e.g., external circuit condition) {9}
173  DF  .~.~.~ Light {3}
177.~.~.~.~ Plural light sensors

DEFINITION

Classification: 361/177

Plural light sensors:

(under subclass 173) Subject matter wherein more than one light sensor is included in the control circuit.