Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820720 | Sound-absorbing article effective over a broad frequency range | Norbert Nicolai, Helmut Fuchs | 2004-11-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820720 | Sound-absorbing article effective over a broad frequency range | Norbert Nicolai, Helmut Fuchs | 2004-11-23 |