Toothbrush head and neck unit

Details Toothbrush head and neck unit Toothbrush head and neck unit

1991-12-13

1994-01-18

Burke, Wallace R.

Brushware

Toothbrush or handle therefor

Patent

active

D03432947

REFERENCES:
patent: D240981 (1976-08-01), Hill et al.
patent: D309375 (1990-07-01), Ahlstroem et al.
patent: 1128139 (1915-02-01), Hoffman
patent: 1191556 (1916-07-01), Blake
patent: 1382681 (1921-06-01), Segal
patent: 2567080 (1951-09-01), Pifer
patent: 3229318 (1966-01-01), Clemens
patent: 4010509 (1977-03-01), Huish
patent: 4268933 (1981-05-01), Papas

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