Swimming fin

Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached

Patent

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Details

A63B 3111

Patent

active

055888909

ABSTRACT:
Swimmimg fin of the type having an open shoe comprising a shoe portion (201) and a blade portion (101), in which the top surface (211) of the sole of said shoe portion (201) comprises two or more longitudinal ribs (121) projecting into the interior of the shoe portion (201).

REFERENCES:
patent: 3922741 (1975-12-01), Semeia
patent: 5163859 (1992-11-01), Beltrani
patent: 5324219 (1994-06-01), Beltrani et al.

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