Exercise floor

Details Exercise floor Exercise floor

1979-04-30

1981-06-23

Apley, Richard J.

Undertaking

52584, 52402, A63B 500, E04F 1522

Patent

active

042746264

ABSTRACT:
4.times.8 Plywood sections are interconnected by a system of tabs and latches, and a spring suspension system is provided beneath the interconnected sections.

REFERENCES:
patent: 2119327 (1938-05-01), Gunnarson
patent: 2243943 (1941-06-01), Bunting
patent: 2340864 (1944-02-01), Carpenter
patent: 2834065 (1958-05-01), Mueller
patent: 2855201 (1958-10-01), Yetton
patent: 3192574 (1965-07-01), Jaffe et al.
patent: 3343324 (1967-09-01), Gordon
patent: 3375005 (1968-03-01), Cook
patent: 3604173 (1971-09-01), Dahlborg
patent: 3859768 (1975-01-01), Donzis
patent: 3879916 (1975-04-01), Bigham

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