Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5080840 | Method and apparatus for the manufacture of roof covering plates having a transverse flange | Gunter Jost | 1992-01-14 |
| 4986744 | Apparatus for manufacturing multi-layered concrete roof tiles | Gunter Jost | 1991-01-22 |
| 4426204 | Process for the marking of carrierless polymeric membranes and asymmetric carrierless polymeric membrane | Nils Hese, Alfred Seeling | 1984-01-17 |