US Patent 9033069 High-shear roller cone and PDC hybrid bit
Patent 9033069 was granted and assigned to Smith International on May, 2015 by the United States Patent and Trademark Office.
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Patent abstract
A drill bit having a bit body, at least one blade extending radially from the bit body, a plurality of blade cutting elements disposed on each blade, at least one journal extending downwardly and radially outward from a longitudinal axis of the drill bit, a roller cone or roller disc mounted rotatably to each journal, and a plurality of cutting elements disposed on each roller cone or roller disc, and methods for making the drill bit are disclosed.
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Patent Inventor Names
Zhehua Zhang0
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US Patent 09033069 High-shear roller cone and PDC hybrid bit US Patent 9033069 High-shear roller cone and PDC hybrid bit
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Patent Number
09033069
Patent Number
9033069
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Official Website
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US Patent 09033069 High-shear roller cone and PDC hybrid bit
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Is a
Current assignee
Patent jurisdiction
Patent number
09033069
Date of patent
May 19, 2015
Patent application number
12985054
Date Filed
January 5, 2011
Patent primary examiner
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