US Patent 8678111 Hybrid drill bit and design method
Patent 8678111 was granted and assigned to Baker Hughes on March, 2014 by the United States Patent and Trademark Office.
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Patent abstract
A hybrid earth-boring bit comprising a bit body having a central axis, at least one, preferably three fixed blades, depending downwardly from the bit body, each fixed blade having a leading edge, and at least one rolling cutter, preferably three rolling cutters, mounted for rotation on the bit body. A rolling cutter is located between two fixed blades.
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Patent Inventor Names
Anton F. Zahradnik0
Don Q. Nguyen0
Jack T. Oldham0
Karlos B. Cepeda0
Mark P. Blackman0
Matthew J. Meiners0
Michael S. Damschen0
Ronny D. McCormick0
Rudolf Carl Pessier0
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US Patent 08678111 Hybrid drill bit and design method US Patent 8678111 Hybrid drill bit and design method
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Patent Number
08678111
Patent Number
8678111
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Official Website
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US Patent 08678111 Hybrid drill bit and design method
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Is a
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Patent jurisdiction
Patent number
08678111
Date of patent
March 25, 2014
Patent application number
12271033
Date Filed
November 14, 2008
Patent primary examiner
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