Brushware – Powered – Electric toothbrush
Patent
1997-06-26
1998-06-02
Douglas, Alan P.
Brushware
Powered
Electric toothbrush
0402
Patent
active
D03947513
REFERENCES:
patent: D324774 (1992-03-01), Elkerbout
patent: 2323378 (1943-07-01), Champion et al.
patent: 5504959 (1996-04-01), Yukawa et al.
Eguchi Kyoko
Mochida Taro
Douglas Alan P.
Matsushita Electric & Works Ltd.
Tabor Lavone D.
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