Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4341556 | Material for electrical contacts | Roger Wolmer, Andreas Szulczyk, Willi Malikowski | 1982-07-27 |
| 4330330 | Work material of silver with tin and tungsten oxides for electrical contact | — | 1982-05-18 |