Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658811 | Method of erecting a building ceiling | — | 2003-12-09 |
| 5956908 | Concrete container | Harald Bitschnau | 1999-09-28 |
| 5439147 | Container for introducing concrete into formwork | — | 1995-08-08 |