Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333836 | Cellular drum filter for the dewatering of fiber suspensions | Helmut Hirschfelder | 1982-06-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333836 | Cellular drum filter for the dewatering of fiber suspensions | Helmut Hirschfelder | 1982-06-08 |