Inventor
WITMAN IV GEORGE B
US3 patents
Patents
3 patentsUS6814162B2Nov 9, 2004
One cone bit with interchangeable cutting structures, a box-end connection, and integral sensory devices
SMITH INTERNATIONAL70 citations93
US7665547B2Feb 23, 2010
Drill bit reservoir with controllable relief pressure
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US6719073B2Apr 13, 2004
Single-cone rock bit having cutting structure adapted to improve hole cleaning, and to reduce tracking and bit balling
SMITH INTERNATIONAL7 citations71