Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6769272 | Method and apparatus for oxygen refinement of a glass melt | Gernot Roeth, Thomas Pfeiffer | 2004-08-03 |
| 6735237 | Device for producing a glass melt | Frank Karetta, Franz Ott, Siegfried Breitfelder | 2004-05-11 |