Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863197 | High-pressure end fitting | — | 1989-09-05 |
| 4842094 | Rotatable horizontal vibrator | Howard A. Willis, Marvin G. Bays | 1989-06-27 |
| 4836455 | Fluid-jet-cutting nozzle assembly | — | 1989-06-06 |