Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6684538 | Cutting tooth for a trencher chain | John H. Walgren, Jerome Robillard | 2004-02-03 |
| 6154987 | Cutting tooth for a trencher chain | John H. Walgren | 2000-12-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6684538 | Cutting tooth for a trencher chain | John H. Walgren, Jerome Robillard | 2004-02-03 |
| 6154987 | Cutting tooth for a trencher chain | John H. Walgren | 2000-12-05 |