US PATENT SUBCLASS 33 / 443
.~.~ Both ends connected

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

403  DF  STRAIGHTEDGE TYPE {16}
430  DF  .~ Base attached {8}
443.~.~ Both ends connected {3}
444  DF  .~.~.~> By cord and roller
445  DF  .~.~.~> By rack and pinion
446  DF  .~.~.~> One end moveable along straightedge

DEFINITION

Classification: 33/443

Both ends connected:

(under subclass 430) Subject matter wherein the straightedge is attached to the supporting base at each extremity by some means to guide the straightedge on the support base.