Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4472184 | Support and holding frame for air filtering elements | Gerhard Neumann | 1984-09-18 |
| 4243486 | Method of mounting filter elements and mounting therefor | Gerhard Neumann | 1981-01-06 |
| 4193844 | Method of mounting filter elements and mounting therefor | Gerhard Neumann | 1980-03-18 |