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INSTRUCTIONAL FITNESS PROGRAMS
US3 patents
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US5634872AJun 3, 1997
Apparatus for use in enhancing explosive leg power
INSTRUCTIONAL FITNESS PROGRAMS18 citations87
US5417631AMay 23, 1995
Method for use in enhancing explosive leg power
INSTRUCTIONAL FITNESS PROGRAMS8 citations68
US5209713AMay 11, 1993
Method and apparatus for use in enhancing explosive leg power
INSTRUCTIONAL FITNESS PROGRAMS13 citations68