US PATENT SUBCLASS 74 / 507
.~.~.~ Gear

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

469  DF  CONTROL LEVER AND LINKAGE SYSTEMS {8}
491  DF  .~ Hand operated {4}
504  DF  .~.~ Rotatable rod, shaft, or post {5}
507.~.~.~ Gear {2}
508  DF  .~.~.~.~> Variable ratio
509  DF  .~.~.~.~> Screw and nut

DEFINITION

Classification: 74/507

(under subclass 504) Devices connected to gearing for operating it.