Aquatic amusement and exercising device
United States Patent 2075649

Inventors:
Knight, William P.
Publication Date:
03/30/1937
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Assignee:
Knight, William P.
Primary Class:
441/66
Other Classes:
359/895
International Classes:
B63B35/74; B63C9/08; B63B35/73; B63C9/00