Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4298362 | Filter cleaning device | Walther Krull, Wolf-Dieter Schiller | 1981-11-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4298362 | Filter cleaning device | Walther Krull, Wolf-Dieter Schiller | 1981-11-03 |