US PATENT SUBCLASS 33 / 483
.~ Rules

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

403  DF  STRAIGHTEDGE TYPE {16}
483.~ Rules {4}
484  DF  .~.~> With attachment {5}
492  DF  .~.~> Edge details
493  DF  .~.~> Particular material
494  DF  .~.~> Special scale markings

DEFINITION

Classification: 33/483

Rules:

(under subclass 403) Subject matter comprising a single nonattached straight bar of rigid enough material to guide a tool for drawing straight lines and having some type of indicia on the straightedge for making some type of measurement.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

89.2, for a ruler combined with a blotter.