Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813863 | Rotary extruder with a gear pump | Granville J. Hahn, Durward E. Rutledge | 1989-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813863 | Rotary extruder with a gear pump | Granville J. Hahn, Durward E. Rutledge | 1989-03-21 |