Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844812 | Pumped hydrocyclone backpressure control | Michael D. Haynes, Robert A. Stuck | 1989-07-04 |
| 4833829 | Geometric sliding door | — | 1989-05-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844812 | Pumped hydrocyclone backpressure control | Michael D. Haynes, Robert A. Stuck | 1989-07-04 |
| 4833829 | Geometric sliding door | — | 1989-05-30 |