Electronic toothbrush

Details Electronic toothbrush Electronic toothbrush

1990-07-16

1992-09-08

Burke, Wallace R.

Brushware

Powered

Electric toothbrush

Patent

active

D03291413

REFERENCES:
patent: D290552 (1987-06-01), Hukuba
patent: D317831 (1991-07-01), Hukuba
patent: 1091209 (1914-03-01), Gates
patent: 1358523 (1920-11-01), Cook
patent: 1658221 (1928-02-01), Brown
patent: 2435394 (1948-02-01), Hawley
patent: 4128911 (1978-12-01), Perez
patent: 4253212 (1981-03-01), Fujita
patent: 4526570 (1985-07-01), Nakagawa et al.
patent: 4691718 (1987-09-01), Sakuma et al.
patent: 4726806 (1988-02-01), Hukuba
patent: 4944296 (1990-07-01), Suyama

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