US PATENT SUBCLASS 359 / 810
.~.~ Operation viewed through lens

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

642  DF  LENS {32}
809  DF  .~ Combined with diverse art tool, instrument or machine {1}
810.~.~ Operation viewed through lens

DEFINITION

Classification: 359/810

Operation viewed through lens:

(under subclass 809) Subject matter wherein the lens is so positioned with respect to the tool, instrument, or machine that the operation or functioning of the tool, instrument, or machine may be viewed through the lens.