US PATENT SUBCLASS 33 / 492
.~.~ Edge details

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

403  DF  STRAIGHTEDGE TYPE {16}
483  DF  .~ Rules {4}
492.~.~ Edge details

DEFINITION

Classification: 33/492

Edge details:

(under subclass 483) Subject matter wherein the straightedge is constructed to provide a ruling edge having one or more designs on said edge for drawing other than straight lines.