Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4644728 | Securing elements for attaching on or to construction serving additions to structures | Hans-Rudolf Klein, Alfons Thalmeir | 1987-02-24 |
| 4593498 | Construction component for producing of preferred shot-in structures | Hans-Rudolf Klein, Alfons Thalmeir | 1986-06-10 |