Voice changing amusement microphone

Details Voice changing amusement microphone Voice changing amusement microphone

1989-05-10

1991-06-11

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

D21111

Patent

active

D03174727

REFERENCES:
patent: D224977 (1972-10-01), Lieberman
patent: D250137 (1978-10-01), Dorfman
patent: D290838 (1987-07-01), Stames
patent: D295759 (1988-05-01), Kolich
patent: D302819 (1989-08-01), Kubota
patent: D310368 (1990-09-01), Derhaag et al.
Just for Kids Catalog, Spring-1980, p. 6, Item B, "Sing Along Radio".

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