E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/46 (2006.01) B22F 7/06 (2006.01) E21B 10/00 (2006.01)
Patent
CA 2466436
Drill bit bodies are provided having one portion formed of one composition and a further portion formed of a different composition. The different compositions provide different functional properties to respective portions of the drill bit body. Methods for forming such drill bit bodies are also provided.
Fetherstonhaugh & Co.
Smith International Inc.
LandOfFree
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