US PATENT SUBCLASS 33 / 435
.~.~ Rotary base

Current as of: June, 1999
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403  DF  STRAIGHTEDGE TYPE {16}
430  DF  .~ Base attached {8}
435.~.~ Rotary base

DEFINITION

Classification: 33/435

Rotary base:

(under subclass 430) Subject matter wherein the support base can be moved in a circular motion while the straightedge device maintains a constant position.