Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827535 | Dowel bolt with expansion control | Thomas Doppelbauer, Herbert Kaufmann, Hubert Forster, Frank Anschütz | 2004-12-07 |
| 6820720 | Sound-absorbing article effective over a broad frequency range | Norbert Nicolai, Dinh-Quyen Chuong | 2004-11-23 |
| 6793037 | Structured molded parts for sound absorption | Gerhard Babuke, Philip Leistner, Xueqin Zha | 2004-09-21 |
| 6675551 | Plate-shaped constructional element and method | — | 2004-01-13 |