Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658767 | Trenching method and apparatus | Keith R. Kelly | 2003-12-09 |
| 6016616 | Sensor positioning apparatus for trench excavator | — | 2000-01-25 |
| 5707175 | Excavating and pipe laying machines | — | 1998-01-13 |
| 5671554 | Sensor positioning apparatus for trench excavator | — | 1997-09-30 |