Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305492 | Noise-protection wall-segment | Norbert Brand, Klaus Oberlander | 2001-10-23 |
| 4371575 | Rigid, one-piece, biaxially stretched shaped body of synthetic resin and method for making the same | Klaus Kerk, Dieter Mueller | 1983-02-01 |