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United States of America Patent
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N/A
Issued Date -
Nov 19, 2009
app pub date -
Dec 15, 2008
filing date -
May 15, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
. The present invention can improve steering performance and braking performance when running on a road surface besides a snowy road or icy road by reinforcing the lowered rigidity of the tread block by forming sipes through internal friction between subblocks by protruded portions.
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