Drill bit having diamond film cutting surface
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United States of America Patent
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-
Dec 11, 1990
Grant Date -
N/A
app pub date -
Sep 22, 1989
filing date -
Sep 22, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved diamond drill bit is provided which has a diamond film cutting surface. The drill bit comprises a body member and a plurality of cutting members, each including a diamond cutting face formed from a diamond substrate coated with a diamond film.
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