Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5398470 | Reinforcement body for a floor slab | Klaus Ritter, Gerhard Ritter | 1995-03-21 |
| 4597239 | Lining-frame of latticework construction for galleries, tunnels or the like | Gerhard Ritter, Klaus Ritter, Edgar Pollhammer | 1986-07-01 |
| 4594830 | Bonding unit for reinforced concrete structural components | Gerhard Ritter, Klaus Ritter | 1986-06-17 |