Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830801 | Degassing process for a worm extruder | Erwin Rossberger, Josef Helmut Weinmaier | 1989-05-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830801 | Degassing process for a worm extruder | Erwin Rossberger, Josef Helmut Weinmaier | 1989-05-16 |