Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353997 | Process for crushing raw lignite | Werner Karpus, Gerhard Salewski | 1994-10-11 |
| 5315940 | Process and apparatus for the treatment of moist gas-dust mixtures | — | 1994-05-31 |