Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108715 | Sealing arrangement for a rotating shaft | Herbert Jekat, Detlee Klatt | 1992-04-28 |
| 4238159 | Apparatus for extracting alumina from bauxite | Arther J. Tielens, Wolfgang Muller | 1980-12-09 |