Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628956 | Method for manufacturing a rubber article | Martin Theusner | 1997-05-13 |
| 4836992 | Process for desulfurizing waste gases | Peter A. Mueller, Guenter Holzaepfel | 1989-06-06 |
| 4255647 | Water tank having electric heating element and cathodic corrosion protection | Gunter Holzapfel | 1981-03-10 |