US PATENT SUBCLASS 33 / 474
.~ Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares)

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

403  DF  STRAIGHTEDGE TYPE {16}
474.~ Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares) {7}
475  DF  .~.~> With right angle truing adjustment
476  DF  .~.~> With special scale markings
477  DF  .~.~> Lettering guide
478  DF  .~.~> Folding or separable
479  DF  .~.~> T-square
480  DF  .~.~> Try square
481  DF  .~.~> Multiplane

DEFINITION

Classification: 33/474

Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares):

(under subclass 403) Subject matter comprising various straightedges which are conjointly secured at an angle of 90 deg..