Drill and Drill Head with Drill Margin
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United States of America Patent
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Issued Date -
Sep 24, 2015
app pub date -
Mar 19, 2014
filing date -
Mar 19, 2014
priority date (Note) -
Abandoned
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Abstract
A drill or drill head with a drill margin which comprises a margin extremity adjacent to a relief surface. The margin extremity is located outside of the cutting diameter.
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