US PATENT SUBCLASS 440 / 15
.~.~ Flexible

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

13  DF  OSCILLATING PROPELLING MEANS {3}
14  DF  .~ Fishtail motion propelling means {1}
15.~.~ Flexible

DEFINITION

Classification: 440/15

Flexible:

(under subclass 14) Device wherein the reacting surface which comes in contact with the water is made of a pliant material.