Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404106 | Filter apparatus and a method of cleaning filter elements thereof | Hans Muller | 1983-09-13 |
| 4397953 | Method and apparatus for anaerobic fermentation | Felix Muller | 1983-08-09 |
| 4276166 | Filter apparatus and a method of cleaning filter elements thereof | Hans Muller | 1981-06-30 |
| 4230576 | Method of cleaning filter elements thereof | Hans Muller | 1980-10-28 |