US PATENT SUBCLASS 280 / 191
.~.~.~.~.~ Shiftable gear

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
727  DF  .~ Attachment {22}
186  DF  .~.~ Hitching and controlling devices {3}
189  DF  .~.~.~ Wheel operated {1}
190  DF  .~.~.~.~ Winding drum {2}
191.~.~.~.~.~ Shiftable gear

DEFINITION

Classification: 280/191

(under subclass 190) Devices having a shiftable gear transmission between the drum and wheel.