US PATENT SUBCLASS 33 / 448
.~ With means for moving straightedge over a surface

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

403  DF  STRAIGHTEDGE TYPE {16}
448.~ With means for moving straightedge over a surface {2}
449  DF  .~.~> By rollers
450  DF  .~.~> Set shift

DEFINITION

Classification: 33/448

With means for moving straightedge over a surface:

(under subclass 403) Subject matter comprising means incorporated into the straightedge device for facilitating the movement over the work supported on the base.