Brushware – Powered – Electric toothbrush
Patent
1991-06-12
1993-04-20
Burke, Wallace R.
Brushware
Powered
Electric toothbrush
D 4105
Patent
active
D03348423
REFERENCES:
patent: D102048 (1936-11-01), Brothers et al.
patent: D278764 (1985-05-01), Olsen
patent: 1736525 (1929-11-01), Evslin
patent: 1874467 (1932-08-01), Doll
Christian Robert E.
Evans William T.
Lemon J. Robert
Burke Wallace R.
Professional Dental Technologies, Inc.
Tabor Lavone D.
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