Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876147 | Cable insulation based on ethylene polymers having high resistance to the formation of water trees | Johannes Schlag, Ernst Koehnlein, Peter Bauer, Ludwig Koessler | 1989-10-24 |