Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4785492 | Floor cleaning apparatus | Wieland Guhne, Uwe Kemker, Wolfgang Troger, Hans J. Birr, Paul Michel | 1988-11-22 |
| 4561992 | Aerosol cleaning agent for textile surfaces | Wolfgang Troger, Otto Mesmer | 1985-12-31 |
| 4454627 | Device for cleaning textile surfaces | Hans-Peter Simm, Wieland Guhne, Christoph Hoesch | 1984-06-19 |