Drill bit
Description
The broken lines in
Claims
The ornamental design for a drill bit, as shown and described.
Referenced Cited
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Foreign Patent Documents
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Patent History
Patent number: D656974
Type: Grant
Filed: Jul 7, 2011
Date of Patent: Apr 3, 2012
Assignee: Center Rock Inc. (Berlin, PA)
Inventors: Leland H. Lyon (Roanoke, VA), Warren Thomas Lay (Catawba, VA)
Primary Examiner: Patricia Palasik
Attorney: Kim Krizman LLC
Application Number: 29/396,799
Type: Grant
Filed: Jul 7, 2011
Date of Patent: Apr 3, 2012
Assignee: Center Rock Inc. (Berlin, PA)
Inventors: Leland H. Lyon (Roanoke, VA), Warren Thomas Lay (Catawba, VA)
Primary Examiner: Patricia Palasik
Attorney: Kim Krizman LLC
Application Number: 29/396,799
Classifications
Current U.S. Class:
Cutting Tool, E.g., Drill Bit, Etc. (D15/139)