Brushware – Powered – Electric toothbrush
Patent
1984-07-11
1986-08-26
Kemper, Catherine E.
Brushware
Powered
Electric toothbrush
D 4104, D 4199, D24 15
Patent
active
D02852624
REFERENCES:
patent: D222862 (1972-01-01), Cook
patent: D266117 (1982-09-01), Oberheim
patent: 3608548 (1971-09-01), Lewis
patent: 4141352 (1979-02-01), Ebner et al.
Kemper Catherine E.
Thorwarth & Grebe OHG
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