Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761099 | Process for strengthening and sealing geological formations | Max Mann, Manfred Kapps, Frank Meyer, Hans Mehesch, Wolfgang Cornely +2 more | 1988-08-02 |
| 4652174 | Method of forming underground ducts, conduits and the like | Wolfgang Cornely, Dietrich Stein, Karl Kubicki | 1987-03-24 |