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Class Information
Number: 441/63
Name: Buoys, rafts, and aquatic devices > Swimming aid to increase stroke efficiency > Foot attached > With lock or latch
Description: Device having means to hold or secure the water-contacting surface in a predetermined position.

Patents under this class:

Patent Number Title Of Patent Date Issued
8087959 Detachable swim fin Jan. 3, 2012
7997948 Hybrid water sport apparatus Aug. 16, 2011
7658659 Hybrid water sport footwear Feb. 9, 2010
7537501 Swimming fin with heel strap fastening buckle May. 26, 2009
6227923 Foot propulsion device for float tube users May. 8, 2001
6193636 Swimming auxiliary device Feb. 27, 2001
6126502 Diving fin Oct. 3, 2000
5766050 Flipper and combination of a boot, shoe, footwear, or similar and a flipper Jun. 16, 1998
5645460 Retractable fin assembly Jul. 8, 1997
5632662 Centrally articulated swin fin May. 27, 1997
5593333 Fin assembly for float tube users Jan. 14, 1997
5108327 Retractable swim fin Apr. 28, 1992
4981454 Retractable swim fin Jan. 1, 1991
4940437 Swim fin with harness Jul. 10, 1990
4889510 Harness for swim fins Dec. 26, 1989
4599071 Adjustable beach-shoes Jul. 8, 1986

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