Hand held muscle builder

Details Hand held muscle builder Hand held muscle builder

1986-09-22

1988-06-28

Apley, Richard J.

Undertaking

272135, 272DIG4, A63B 2114

Patent

active

047534346

ABSTRACT:
A conventional hand held, manually operable exercise device for strengthening the hand and arm muscles in which a pair of hand engageable handles are movable toward one another to tension an intervening coil spring. A resistor is attachable to the exercise device for selectively varying the resistance to closing movement of the handles.

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patent: 4279415 (1981-07-01), Katz
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patent: 4433364 (1984-02-01), Noble
patent: 4513962 (1985-04-01), Robson et al.
patent: 4623141 (1986-11-01), Salvino

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