Drill bit

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Description

FIG. 1 is a bottom perspective view of the drill bit.

FIG. 2 is a side view of the drill bit with an enlarged detail; and,

FIG. 3 is a perspective view of the drill bit.

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.

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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