Non-rotating drill bit for a down-the-hole drill hammer
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Description
The broken lines of
Claims
The ornamental design for a non-rotating drill bit for a down-the-hole drill hammer, as shown and described.
Referenced Cited
U.S. Patent Documents
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20040076483 | April 22, 2004 | Singh et al. |
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Patent History
Patent number: D873316
Type: Grant
Filed: Nov 22, 2017
Date of Patent: Jan 21, 2020
Assignee: Center Rock Inc. (Berlin, PA)
Inventor: Leland H. Lyon (Roanoke, VA)
Primary Examiner: Patricia A Palasik
Application Number: 29/627,070
Type: Grant
Filed: Nov 22, 2017
Date of Patent: Jan 21, 2020
Assignee: Center Rock Inc. (Berlin, PA)
Inventor: Leland H. Lyon (Roanoke, VA)
Primary Examiner: Patricia A Palasik
Application Number: 29/627,070
Classifications
Current U.S. Class:
Cutting Tool, E.g., Drill Bit, Etc. (D15/139)