Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878785 | Abrasive fluid flow | Roger A. Heron | 1989-11-07 |
| 4854090 | Feeding abrasive material | Roger A. Heron, Robert M. Fairhurst | 1989-08-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878785 | Abrasive fluid flow | Roger A. Heron | 1989-11-07 |
| 4854090 | Feeding abrasive material | Roger A. Heron, Robert M. Fairhurst | 1989-08-08 |