Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169524 | Filter ring | Jorg Sebig, Christian Haasis | 1992-12-08 |
| 5100444 | Hollow body, in particular a pipe segment or a cylindrical body | Christian Haasis, Ewald Muller | 1992-03-31 |