Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5605645 | Furnace heater surrounded by a ceramic tube and fastened with a ceramic flange | Ludwig Weiler, Hans Ammon, Fritz Hegewaldt | 1997-02-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5605645 | Furnace heater surrounded by a ceramic tube and fastened with a ceramic flange | Ludwig Weiler, Hans Ammon, Fritz Hegewaldt | 1997-02-25 |