US PATENT SUBCLASS 250 / 239
.~ Housings (in addition to cell casing)

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

200  DF  PHOTOCELLS; CIRCUITS AND APPARATUS {11}
239.~ Housings (in addition to cell casing)

DEFINITION

Classification: 250/239

(under subclass 200) Subject matter having a housing for the photocell apparatus.