US PATENT SUBCLASS 440 / 22
.~ Rocking watercraft

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

21  DF  OPERATOR POWERED DRIVE FOR PROPELLING MEANS {6}
22.~ Rocking watercraft

DEFINITION

Classification: 440/22

Rocking watercraft:

(under subclass 21) Device wherein the motive force of a propelling means is obtained by a to-and-fro motion of the vessel imparted thereto by the occupant of the vessel.