1978-11-06
1980-04-29
Yasko, John D.
Undertaking
128 25B, A63B 2302
Patent
active
042002826
ABSTRACT:
A multiple exerciser device having two spaced, freely rotatable platforms upon which twisting of the body can be performed by positioning the feet on the platforms, a spring-biased jumping and running exerciser board positioned between two parallel hand gripping bars, all operatively connected to a step-up base used in the performance of twisting and turning, jumping and running, and parallel bar exercises.
REFERENCES:
patent: 1952830 (1934-03-01), Wrobley
patent: 3384369 (1968-05-01), Rumell
patent: 3419732 (1968-12-01), Lane
patent: 3612519 (1971-10-01), Larson
patent: 3659844 (1972-05-01), Cummins
patent: 3911907 (1975-10-01), Smith, Jr.
patent: 3929329 (1975-12-01), Rivera
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