Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4392714 | Overhead power cable having light conducting fibers arranged in its interior | Siegfried Bruggendieck, Friedrich Krahn, Gerhard Olejak | 1983-07-12 |
| 4274442 | Mixer valve for sanitary engineering | Georg Bernat, Claus John | 1981-06-23 |