Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838917 | Process and apparatus for the production of very fine mineral fibers, in particular glass fibers | Wolfram Wagner, Roger Nyssen, Dirk Berkenhaus | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838917 | Process and apparatus for the production of very fine mineral fibers, in particular glass fibers | Wolfram Wagner, Roger Nyssen, Dirk Berkenhaus | 1989-06-13 |