Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4941341 | Process and apparatus for cold pressing a conical external thread | — | 1990-07-17 |
| 4689984 | Method for producing male conical threads | — | 1987-09-01 |
| 4652179 | Method of and device for severing a tension member in a prestressed grouted anchor | Konrad Spang, Thomas Herbst | 1987-03-24 |
| 4473936 | Process for manufacturing a protection against corrosion for cables of high-strength steel wires | Otmar Langwadt, Thomas Herbst | 1984-10-02 |