Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851184 | Building made from concrete walls, in particular for nuclear plants | Norbert Krutzik, Otto Schad, Wolfgang Zerna, Friedhelm Stangenberg | 1989-07-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851184 | Building made from concrete walls, in particular for nuclear plants | Norbert Krutzik, Otto Schad, Wolfgang Zerna, Friedhelm Stangenberg | 1989-07-25 |