Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878320 | Abrasive feed system | — | 1989-11-07 |
| 4821467 | Control system for liquid propelled abrasive cleaning | R. Craig Martin, Bryce T. Baker | 1989-04-18 |
| 4817342 | Water/abrasive propulsion chamber | R. Craig Martin | 1989-04-04 |
| 4815241 | Wet jet blast nozzle | — | 1989-03-28 |