US PATENT SUBCLASS 341 / 31
.~.~ Photoelectric actuation

Current as of: June, 1999
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341 /   HD   CODED DATA GENERATION OR CONVERSION

20  DF  BODILY ACTUATED CODE GENERATOR {3}
22  DF  .~ Including keyboard or keypad {11}
31.~.~ Photoelectric actuation

DEFINITION

Classification: 341/31

Photoelectric actuation:

(under subclass 22) Subject matter in which the operation of a control element is sensed by an electrical light sensor.

SEE OR SEARCH CLASS

250, Radiant Energy, appropriate subclasses for a photoelectric switch.