US PATENT SUBCLASS 313 / 541
.~ Having photocathode on tube wall

Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

523  DF  PHOTOSENSITIVE {12}
541.~ Having photocathode on tube wall

DEFINITION

Classification: 313/541

Having photocathode on tube wall:

(under subclass 523) Subject matter wherein the photoemissive cathode is on the envelope wall.

SEE OR SEARCH THIS CLASS, SUBCLASS:

530, for a photosensitive lamp or discharge device having a phosphor screen and a photocathode on the lamp or discharge envelope.

538, for a gas phototube having a photocathode on the envelope wall.

544, for a photocathode combined with an envelope.

SEE OR SEARCH CLASS

427, Coating Processes, 74+, for photoelectric coating on a member which is an electrical product.