Sit-up exercise device

Details Sit-up exercise device Sit-up exercise device

1983-04-14

1985-11-05

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

Patent

active

D02812673

REFERENCES:
patent: D277218 (1985-01-01), Hinds
patent: 1969165 (1934-08-01), Turner
patent: 2050652 (1936-08-01), Fleming
patent: 4116434 (1978-09-01), Bernstein
patent: 4121825 (1978-10-01), Hult
patent: 4182509 (1980-12-01), Chupp, Jr.
patent: 4182510 (1980-12-01), Lundell
patent: 4185816 (1980-01-01), Bernstein
patent: 4212458 (1980-07-01), Bizilia
patent: 4323235 (1982-04-01), Schwarz

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