US PATENT SUBCLASS 440 / 36
.~ Ground wheel or poler

Current as of: June, 1999
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440 /   HD   MARINE PROPULSION

33  DF  TOWING {3}
36.~ Ground wheel or poler

DEFINITION

Classification: 440/36

Ground wheel or poler:

(under subclass 33) Device wherein the propulsion means comprises traction wheels which are used to traverse the bed or bottom of the canal or a long cylindrical piece of wood or metal attached to the vessel contacts or digs into the bed or

bottom of the canal.