Drill bit
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Description
The broken line showing of the drill bit is included for the purpose of illustrating portions of the drill bit and forms no part of the claimed invention.
Claims
The ornamental design for a drill bit, as shown and described.
Referenced Cited
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Patent History
Patent number: D620510
Type: Grant
Filed: Feb 26, 2008
Date of Patent: Jul 27, 2010
Assignee: Schlumberger Technology Corporation (Houston, TX)
Inventor: David R. Hall (Provo, UT)
Primary Examiner: Sandra Snapp
Assistant Examiner: Patricia Palasik
Attorney: Holme Roberts & Owens LLP
Application Number: 29/304,177
Type: Grant
Filed: Feb 26, 2008
Date of Patent: Jul 27, 2010
Assignee: Schlumberger Technology Corporation (Houston, TX)
Inventor: David R. Hall (Provo, UT)
Primary Examiner: Sandra Snapp
Assistant Examiner: Patricia Palasik
Attorney: Holme Roberts & Owens LLP
Application Number: 29/304,177
Classifications