Lung exerciser

Details Lung exerciser Lung exerciser

1989-06-08

1991-10-29

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

Patent

active

D03212270

REFERENCES:
patent: D315583 (1991-03-01), Larson et al.
patent: 1211369 (1917-01-01), Miller
patent: 1570567 (1926-01-01), Holycross

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