Handle for electric toothbrush

Brushware – Powered – Electric toothbrush

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D 4138

Patent

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D03701255

REFERENCES:
patent: D197048 (1963-12-01), Troy
patent: D199560 (1964-11-01), Thompson
patent: D199893 (1964-12-01), Bond et al.
patent: D202873 (1965-11-01), Husted
patent: 2158738 (1939-05-01), Baker et al.
patent: 2206726 (1940-07-01), Lasater
patent: 2875458 (1959-03-01), Tsuda
patent: 3104405 (1963-09-01), Perrinjaquet
patent: 3466689 (1969-09-01), Aurelio et al.
patent: 3840932 (1974-10-01), Balamuth et al.
patent: 4991249 (1991-02-01), Suroff
Teledyne Water Pik "Plaque Control 3000" plaque removal instrument (Jul. 1991).
American Dentronics Incorporated "Soniplak" sonic plaque removal system (May 1993).

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