US PATENT SUBCLASS 74 / 546
.~.~.~.~ Extensible

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

469  DF  CONTROL LEVER AND LINKAGE SYSTEMS {8}
*  DD  .~ Elements {8}
543  DF  .~.~ Handles {6}
545  DF  .~.~.~ Hand crank {2}
546.~.~.~.~ Extensible

DEFINITION

Classification: 74/546

(under subclass 545) Devices in which the length of the crank arm is adjustable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

544, for extension handles.