Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5069122 | Thermal marking device for webs of mineral wool and a method of applying the markings | Friedrich Kaufmann, Egon Zinn | 1991-12-03 |
| 4789942 | Installation for manufacturing differing mineral fibre products including manual controls for varying stored control signals | Hans Gaertner, Friedrich Kaufmann, Dietrich Schulz | 1988-12-06 |