Electrically-driven brush
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United States of America Patent
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-
Dec 10, 1991
Issued Date -
N/A
app pub date -
Feb 19, 1991
filing date -
Dec 15, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A toothbrush includes a brush head having a first group of bristle holders arranged along a substantially straight line and a second group of bristle holders arranged in a circle, all the bristle holders being rotatable about their respective axes.
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