Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888111 | Process filter | — | 1989-12-19 |
| 4828697 | Suction filter | Rainer Kuhnt, Kurt Jakob, Josef Brokhage | 1989-05-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888111 | Process filter | — | 1989-12-19 |
| 4828697 | Suction filter | Rainer Kuhnt, Kurt Jakob, Josef Brokhage | 1989-05-09 |