Brush head for electric toothbrush

Details Brush head for electric toothbrush Brush head for electric toothbrush

1997-07-14

1998-08-25

Douglas, Alan P.

Brushware

Powered

Electric toothbrush

0402

Patent

active

D03972518

REFERENCES:
patent: D310139 (1990-08-01), Moharram
patent: 1657450 (1928-01-01), Barnes
patent: 5305492 (1994-04-01), Giuliani et al.
patent: 5504960 (1996-04-01), Hommann
Hong Kong Enterprise, Toothbrush Heads on the lower front row of toothbrushes on p. 136, Feb. 1994.

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