Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808108 | Method and apparatus for the heat treatment of fine-grained material | Peter Tiggesbaumker, Manfred Durr, Karl Krutzner, Wolfgang Rother, Karl Menzel +4 more | 1989-02-28 |