Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698946 | Electric lamp having a protective skin on end portions of the current conductors | — | 1997-12-16 |
| 5027052 | Circuit arrangement for generating a pulsatory supply voltage for a load from a direct voltage | Wolf-Dieter Bauch, Heinz Helmus | 1991-06-25 |