US PATENT SUBCLASS 441 / 64
.~.~ Flipper

Current as of: June, 1999
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441 /   HD   BUOYS, RAFTS, AND AQUATIC DEVICES

55  DF  SWIMMING AID TO INCREASE STROKE EFFICIENCY {4}
61  DF  .~ Foot attached {3}
64.~.~ Flipper

DEFINITION

Classification: 441/64

Flipper:

(under subclass 61) Device including a flexible water-contacting surface resembling webbed feet in appearance and operation.