Sit up exercise support

Details Sit up exercise support Sit up exercise support

1993-07-07

1994-12-06

Feifer, Melvin B.

Games, toys, and sports goods

Toy

Representation or scale model

D 6601, D24190

Patent

active

D03531732

REFERENCES:
patent: D310609 (1990-09-01), Burkhardt
patent: D312372 (1990-11-01), Rutherford
patent: D321760 (1991-11-01), Carney
patent: D325087 (1992-03-01), Brinker
patent: D331167 (1992-11-01), Skold
patent: D331270 (1992-11-01), Johnson et al.
patent: D334107 (1993-03-01), Johnson
patent: 4210322 (1980-07-01), Pritchard
patent: 5033742 (1991-07-01), Johnson et al.
patent: 5147267 (1992-09-01), Kunewalder
patent: 5207704 (1993-05-01), Shields

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