US PATENT SUBCLASS 340 / 870.29
.~.~ Photoelectric cell pickup

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

870.01  DF  CONTINUOUSLY VARIABLE INDICATING (E.G., TELEMETERING) {15}
870.28  DF  .~ Via radiant energy beam (via particular energy) {1}
870.29.~.~ Photoelectric cell pickup

DEFINITION

Classification: 340/870.29

Photoelectric cell pickup:

(under subclass 870.28) Subject matter in which the radiant energy beam is sensed by a photoelectric cell.

SEE OR SEARCH CLASS

250, Radiant Energy,

200+, for photocell systems; and subclasses 388.1+ for infrared and other radiant energy systems.

359, Optics: Systems (Including Communication) and Elements,

113+, for duplex optical communication and subclasses 115+ for multiplex optical communication.