Isometric exercise ball

Details Isometric exercise ball Isometric exercise ball

1994-05-25

1996-06-18

Hyder, Philip S.

Games, toys, and sports goods

Toy

Representation or scale model

D21204

Patent

active

D03709515

REFERENCES:
patent: D241869 (1976-10-01), Hilprecht
patent: D318567 (1991-07-01), Smith
patent: 2664289 (1953-12-01), Norwich
patent: 2884254 (1959-04-01), Miner
patent: 3269727 (1966-08-01), Samuel
patent: 4321888 (1982-03-01), Topliffe
patent: 5230682 (1993-07-01), Myers

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