Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4662773 | Segmental tunnel lining consisting of reinforced concrete tubbings | Theodor Baumann | 1987-05-05 |
| 4499699 | Molding device for sub-soil curtain wall sections | Theodor Baumann | 1985-02-19 |