Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821628 | Glass-ceramic cooking panel that makes deposited material, such as dirt, less conspicuous | Bernd Schultheis, Waldemar Weinberg, Roland Dudek, Friedrich Siebers, Klaus Schoenberger | 2004-11-23 |
| 6794020 | Cooking device with a glass-ceramic panel providing a cooking surface in a variety of different colors and method of making same | Angelina Milanovska, Daniela Petto, Dietmar Wennemann, Dieter Schoenig, Friedrich Siebers | 2004-09-21 |