Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7883153 | Road milling drum having an adjustable width | Eric P. Helsel, Donald E. Keller, Don C. Rowlett | 2011-02-08 |
| 7883154 | Cutting tool with water injection to the cutting bit shank | Wayne H. Beach, Eric P. Helsel, Donald E. Keller | 2011-02-08 |