Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680010 | Electric incandescent and discharge lamps having doped quartz glass envelopes | Werner Weiss | 1997-10-21 |
| 5591096 | Emergency running driving arrangement for a change-speed gearbox automatic selector appliance | Ludger Kortenjann, Bernd Bertsche | 1997-01-07 |