Brushware – Powered – Electric toothbrush
Patent
1990-11-27
1992-03-24
Lucas, Susan J.
Brushware
Powered
Electric toothbrush
Patent
active
D03247740
REFERENCES:
patent: D274575 (1984-07-01), Kronner
patent: 3088148 (1963-05-01), Moret
patent: 3927435 (1975-12-01), Moret et al.
patent: 4374354 (1983-02-01), Petrovic et al.
patent: 4974278 (1990-12-01), Hommann
Haken Jack E.
Lucas Susan J.
Tabor Lavone D.
U.S. Philips Corporation
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