Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4630421 | Roof web for pitched roofs | Hermann Diehl, Gunter Baatz | 1986-12-23 |
| 4469736 | Planar element for the absorption of air-transmitted sound and method of manufacturing the same | — | 1984-09-04 |