US PATENT SUBCLASS 81 / 74
.~ Wheel or endless track operated

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
74.~ Wheel or endless track operated {1}
75  DF  .~.~> Hub-rim grasp {1}

DEFINITION

Classification: 81/74

Wrenches attached to and driven by wheels to turn nuts on or off from axles.