Electric toothbrush

Details Electric toothbrush Electric toothbrush

1982-04-23

1984-05-29

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Brushing

A46B 1302

Patent

active

044505990

ABSTRACT:
An electric toothbrush having a timer for monitoring brushing time. The timer is activated when the pressure exertred on the bristles exceeds a predetermined minimum pressure to ensure proper brushing for a predetermined minimum period of time.

REFERENCES:
patent: 2319205 (1943-05-01), Buck
patent: 3512202 (1970-05-01), Taylor

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