Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5269628 | Device for opening and supporting a headway | — | 1993-12-14 |
| 5253955 | Automatically advancing supporting and sliding form for introducing an in-situ concrete lining | — | 1993-10-19 |
| 4830535 | Knife shield driving device and method for the excavating and/or final supporting of galleries or the like | — | 1989-05-16 |
| 4437788 | Method and apparatus for the advancing of a sliding form | — | 1984-03-20 |
| 4305684 | Method of and apparatus for horizontally and vertically guiding a cutter drive shield | — | 1981-12-15 |