U.S. patent number D640,292 [Application Number D/376,709] was granted by the patent office on 2011-06-21 for micro-trenching blade. This patent grant is currently assigned to The Charles Machine Works, Inc.. Invention is credited to L. Shane Ingram, Vernon T. Stellman, Michael C. Walgren.
United States Patent | D640,292 |
Stellman , et al. | June 21, 2011 |
Inventors: | Stellman; Vernon T. (Stillwater, OK), Ingram; L. Shane (Perry, OK), Walgren; Michael C. (Lake Havasu City, AZ) |
---|---|
Assignee: | The Charles Machine Works, Inc.
(Perry, OK) |
Appl. No.: | D/376,709 |
Filed: | October 11, 2010 |
Current U.S. Class: | D15/21; D15/29 |
Current International Class: | 1503 |
Field of Search: | ;D15/21,29 ;299/112T,112R,79.1,113,107,39.3 ;175/426,427,435,414 ;37/452,453,465,450,446,94 ;172/540,548,555,567,568,120 |
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