Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6457267 | Trenching and edging system | Roger D. Porter | 2002-10-01 |
| D463804 | Trencher blade for earth working machine | Roger D. Porter | 2002-10-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6457267 | Trenching and edging system | Roger D. Porter | 2002-10-01 |
| D463804 | Trencher blade for earth working machine | Roger D. Porter | 2002-10-01 |