US PATENT SUBCLASS 356 / 400
.~ With light detector (e.g., photocell)


Current as of: June, 1999
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356 /   HD   OPTICS: MEASURING AND TESTING

399  DF  BY ALIGNMENT IN LATERAL DIRECTION {2}
400.~ With light detector (e.g., photocell)


DEFINITION

Classification: 356/400

With light detector (e.g., photocell):

(under subclass 399) Subject matter including means responsive to light.