US PATENT SUBCLASS 74 / 547
.~.~.~.~ Collapsible
Current as of:
June, 1999
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74 /
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MACHINE ELEMENT OR MECHANISM
469
DF
CONTROL LEVER AND LINKAGE SYSTEMS
{8}
*
DD
.~ Elements {8}
543
DF
.~.~ Handles {6}
545
DF
.~.~.~ Hand crank {2}
547
.~.~.~.~ Collapsible
DEFINITION
Classification: 74/547
(under subclass 545) Devices in which the handle or crank arm may be folded or otherwise collapsed when not in use.