US PATENT SUBCLASS 359 / 397
.~.~.~ Reference lines or grids

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

362  DF  COMPOUND LENS SYSTEM {8}
368  DF  .~ Microscope {10}
396  DF  .~.~ Transparent slide {2}
397.~.~.~ Reference lines or grids

DEFINITION

Classification: 359/397

Reference lines or grids:

(under subclass 396) Subject matter including indicia on the transparent slide.