US PATENT SUBCLASS 33 / 456
.~.~ Multipivoted straightedges

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

403  DF  STRAIGHTEDGE TYPE {16}
452  DF  .~ Plural straightedges, relatively moveable {6}
456.~.~ Multipivoted straightedges {3}
457  DF  .~.~.~> Navigational
458  DF  .~.~.~> Folding rule type
459  DF  .~.~.~> Two straightedges pivoted at the ends of a central straightedge {3}

DEFINITION

Classification: 33/456

Multipivoted straightedges:

(under subclass 452) Subject matter comprising a plurality of straightedges each having more than one pivot point to permit the pivoted adjustment of one straight edge relative to another.