A HYDRAULIC RESPONSIVE REEL TYPE EXERCISING DEVICE
United States Patent 3481198

Inventors:
Williams, Joseph S.
Publication Date:
12/02/1969
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Assignee:
Joseph, Williams S.
Primary Class:
482/113
Other Classes:
73/379.090, 73/379.080, 482/112
International Classes:
A63B21/008; A63B21/002; B65H75/48; G01L5/06
US Patent References:
0177251
1707449Physical-exercising device
3053533Flight control device for a model airplane
3186231Mechanical exerciser
Foreign References:
CA656187A




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