US PATENT SUBCLASS 33 / 495
.~ Pivot joints

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

403  DF  STRAIGHTEDGE TYPE {16}
495.~ Pivot joints {3}
496  DF  .~.~> 180 degree limit {1}
498  DF  .~.~> 90 degree limit {1}
500  DF  .~.~> Locking

DEFINITION

Classification: 33/495

Pivot joints:

(under subclass 403) Subject matter comprising structure wherein straightedges are connected about a common axis to provide limited rotary movement only.

SEE OR SEARCH THIS CLASS, SUBCLASS:

468, for T-head and pivoted straightedge.