Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305683 | Tubular element for tunnel construction | Harald Wagner, Friedrich K. Blindow, Alfred Schulter | 1981-12-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305683 | Tubular element for tunnel construction | Harald Wagner, Friedrich K. Blindow, Alfred Schulter | 1981-12-15 |