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DRILLING APPARATUS WITH REDUCED EXPOSURE OF CUTTERS AND METHODS OF DRILLING

11/507,279 | U.S. Patent Application

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Location ELECTRONIC
Filed Aug. 21, 2006
Examiner DANIEL P STEPHENSON
Class 175
Art Group 3676
Patent No. 7,814,990
Case Type Utility - 175/057000
Status Patented Case
Parent 11/214,524 Patented
Parent 10/861,129 Patented
Parent 10/266,534 Patented
Parent 09/738,687 Patented
Parent 09/383,228 Patented
Child 12/906,713 Patented
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Last Updated: 3 years ago
Date # Transaction