Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7618595 | Assembly for purifying toxic gases from production processes | Robert Michael Hartung, Rolf Hartung | 2009-11-17 |
| 5769626 | Evacuation system with exhaust gas cleaning and operating process for it | Alfred Hauff | 1998-06-23 |
| 5069603 | Bearings for use in negative-pressure environments | Guenter Wilhelm Schuetz, Hans-Guenter Stueber | 1991-12-03 |
| 5028219 | Bearings for use in negative-pressure environments | Guenter Wilhelm Schuetz, Hans-Guenter Stueber | 1991-07-02 |