US PATENT SUBCLASS 33 / 450
.~.~ Set shift

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

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

DEFINITION

Classification: 33/450

Set shift:

(under subclass 448) Subject matter comprising means for moving the straightedge device in predetermined increments along the surface of the work.

SEE OR SEARCH THIS CLASS, SUBCLASS:

445, and 447, for devices for accurately advancing the straightedge over the work.