E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/46 (2006.01) E21B 10/56 (2006.01)
Patent
CA 2478707
Cutting elements are provided having multiple diameter sections. Also provided are bits incorporating such cutting elements.
Azar Mike
Keshavan Madapusi K.
Truax David
Fetherstonhaugh & Co.
Smith International Inc.
LandOfFree
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