Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818319 | Process for reducing the water vapour diffusion in a plastics composite insulator consisting of several layers | Helmut Britsch, Elias Julke, Tony Kaiser | 1989-04-04 |
| 4805064 | Lightning arrester having a housing with a high filler content | Helmut Britsch, Tony Kaiser, Gunther Maier, Alois Muff | 1989-02-14 |