US PATENT SUBCLASS 33 / 488
.~.~.~.~ Optical (e.g., magnifying)

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

403  DF  STRAIGHTEDGE TYPE {16}
483  DF  .~ Rules {4}
484  DF  .~.~ With attachment {5}
486  DF  .~.~.~ Index {2}
488.~.~.~.~ Optical (e.g., magnifying)

DEFINITION

Classification: 33/488

Optical (e.g., magnifying):

(under subclass 486) Subject matter provided with means on the straightedge to enlarge or emphasize the indicia on the straightedge.