Toothbrush
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United States of America Patent
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-
Jul 27, 1999
Grant Date -
N/A
app pub date -
Jan 30, 1998
filing date -
Feb 24, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A toothbrush wherein the stiffness of the bristles varies along the length or across the width of the head of the toothbrush.
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