Electronic toothbrush
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United States of America Patent
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-
Jul 28, 1992
Issued Date -
N/A
app pub date -
Aug 22, 1991
filing date -
Jan 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic toothbrush has a handle accommodating a light-emitting diode and a sound-producing device as well as an electric circuit for actuating the diode and device. When a current is caused to flow through the toothbrush by grasping the brush and bringing it into contact with the teeth, light and sound are emitted to notify the user that the toothbrush is operating.
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