Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4513556 | Removable tension member for a grout anchor | — | 1985-04-30 |
| 4473936 | Process for manufacturing a protection against corrosion for cables of high-strength steel wires | Urs Kellner, Otmar Langwadt | 1984-10-02 |