(under subclass 723) Subject matter including means which converts varying light intensity into varying electric currents or potential.
SEE OR SEARCH THIS CLASS, SUBCLASS:
639, for photoelectric with digital storage.
SEE OR SEARCH CLASS
250, Radiant Energy,
200+, for photocell electric circuits and photocell apparatus; subclasses 206+ for photocell with coded record; subclasses 232+ for photocells with light chopper type.
330, Amplifiers, 59, for amplifiers including light controlled or light activated means.
