Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5229055 | Method and apparatus of producing hollow profiles from multilayer starting material | Erich Wintermantel | 1993-07-20 |
| 4799822 | Profile elements, particularly for supply and/or removal of substances from environmental and/or flow material | Erich Wintermantel | 1989-01-24 |