Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5992118 | Segment for lining cavities | Harald Wagner | 1999-11-30 |
| 5346332 | Tubbing-type tunnel lining | Harald Wagner | 1994-09-13 |
| 5332334 | Tunnel wall with lining | Harald Wagner | 1994-07-26 |
| 5324139 | Method for the construction of long tunnel with a lining | Harald Wagner, Helmut Pfeil, Otto Schubert | 1994-06-28 |
| 5232302 | Fixing means for connecting components | Harald Wagner, Siegfried Strohhausl | 1993-08-03 |
| 5199817 | Process of providing an elongate underground cavity | Harald Wagner | 1993-04-06 |
| 4812084 | Tubbing ring for lining a tunnel | Harald Wagner | 1989-03-14 |
| 4305683 | Tubular element for tunnel construction | Harald Wagner, Friedrich K. Blindow, Heinz Distelmeier | 1981-12-15 |