US Patent D640292 Micro-trenching blade
Patent D640292 was granted and assigned to The Charles Machine Works Inc. on June, 2011 by the United States Patent and Trademark Office.
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Patent Citations Received
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Patent Inventor Names
L. Shane Ingram0
Michael C. Walgren0
Vernon T. Stellman0
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US Patent D0640292 Micro-trenching blade US Patent D640292 Micro-trenching blade
Infobox
Patent Number
D0640292
Patent Number
D640292
Edits on 8 Dec, 2021
Golden AI
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US Patent D0640292 Micro-trenching blade
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
D0640292
Date of patent
June 21, 2011
Patent application number
29376709
Date Filed
October 11, 2010
Patent primary examiner
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