Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7927059 | Pipeline padding machine with a debris-resistant escalator assembly | Giordano Grassi | 2011-04-19 |
| 4633602 | Method and apparatus for padding pipe | Christy B. Landrum, Jr. | 1987-01-06 |
| 4377365 | Pipeline padding machine and method | — | 1983-03-22 |