TREPAN DRILL
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United States of America Patent
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N/A
Issued Date -
Dec 31, 2009
app pub date -
Jun 24, 2009
filing date -
Jun 24, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A trepan drill that comprises a shaft that includes a clamping portion, and a head that comprises a substantially cylinder barrel shaped core bit and a distal end. The distal end includes a first tooth, a second tooth, and a third tooth that each respectively has a cutting edge. The teeth each have different axial teeth heights and are arranged alternatingly in a circumferential direction.
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