1979-07-16
1981-06-02
Johnson, Richard J.
Undertaking
272146, A63B 2304
Patent
active
042707498
ABSTRACT:
An exercising device for use by a person in a standing position, the device having a parallelpiped frame defining a stall and a planar treadle mounted on the stall for rocking movement about a horizontal axis extending transversely of the stall and in the lower portion thereof.
REFERENCES:
patent: 3379434 (1968-04-01), Guzaldo
patent: 3525522 (1970-08-01), Piller
patent: 3659844 (1972-05-01), Cummins
patent: 3713653 (1973-01-01), Romans
patent: 4183521 (1980-01-01), Kroeker
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