Hard tile drill bit
Latest C4 Carbides Limited Patents:
Description
Claims
The ornamental design for a hard tile drill bit, as shown and described.
Referenced Cited
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Patent History
Patent number: D570663
Type: Grant
Filed: Jun 13, 2006
Date of Patent: Jun 10, 2008
Assignee: C4 Carbides Limited (Cambridge)
Inventor: Paul Edward Duggan (Cambridge)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Karen Acker
Attorney: Nixon & Vanderhye P.C.
Application Number: 29/261,346
Type: Grant
Filed: Jun 13, 2006
Date of Patent: Jun 10, 2008
Assignee: C4 Carbides Limited (Cambridge)
Inventor: Paul Edward Duggan (Cambridge)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Karen Acker
Attorney: Nixon & Vanderhye P.C.
Application Number: 29/261,346
Classifications
Current U.S. Class:
D8/70