Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336317 | Process for making cement using low-grade fuels | Hans Beisswenger, Johannes Loffler | 1994-08-09 |
| 5137704 | Process of decreasing NO.sub.x content of exhaust gases | — | 1992-08-11 |
| 4602924 | Centrifugal separator | — | 1986-07-29 |