Inspiratory muscle exerciser or similar article

Details Inspiratory muscle exerciser or similar article Inspiratory muscle exerciser or similar article

1988-03-15

1991-03-19

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

Patent

active

D03155838

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patent: 1244661 (1917-10-01), Teter
patent: 1392700 (1921-10-01), Oyen
patent: 2292474 (1942-08-01), Paxton
patent: 3298362 (1967-01-01), Lippitt, Jr. et al.
patent: 3958565 (1976-05-01), Wright
patent: 4054134 (1987-10-01), Kritzer
patent: 4062358 (1977-12-01), Kritzer
patent: 4207884 (1980-06-01), Isaacson
patent: 4221381 (1980-09-01), Ericson
patent: 4226233 (1980-10-01), Kritzer
patent: 4444202 (1984-04-01), Rubin et al.
patent: 4739987 (1988-04-01), Nicholson

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