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Class Information
Number: 441/62
Name: Buoys, rafts, and aquatic devices > Swimming aid to increase stroke efficiency > Foot attached > Repositioned by biasing means
Description: Device having means to urge the water-contacting surface to a selected position.

Patents under this class:

Patent Number Title Of Patent Date Issued
7537501 Swimming fin with heel strap fastening buckle May. 26, 2009
7159336 Amphibious shoe Jan. 9, 2007
6227923 Foot propulsion device for float tube users May. 8, 2001
6193636 Swimming auxiliary device Feb. 27, 2001
6120336 Diving fin Sep. 19, 2000
5593333 Fin assembly for float tube users Jan. 14, 1997
5292272 Dual mode swim fin Mar. 8, 1994
5151060 Swimming flipper Sep. 29, 1992
5108327 Retractable swim fin Apr. 28, 1992
5087217 Swimming shoe Feb. 11, 1992
4981454 Retractable swim fin Jan. 1, 1991
4944703 Swim fin having multiple articulating transverse hydrofoil blades Jul. 31, 1990
4940437 Swim fin with harness Jul. 10, 1990
4599071 Adjustable beach-shoes Jul. 8, 1986
4178128 Method of and device for propulsion Dec. 11, 1979

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