Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372866 | Transparent plastic panels having bird protection, and use thereof as sound barriers | Klaus Oberlander, Norbert Brand, Peter Seelman | 1994-12-13 |
| 5040352 | Noise-protection elements of acrylic glass | Klaus Oberlander, Norbert Brand, Kurt Kirdorf, Peter Seelmann | 1991-08-20 |