Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4551396 | Sliding material for seals on rotary regenerative heat exchangers with a ceramic core | Klaus Wiegard, Wolfgang Kleinekathofer, Eggert Tank | 1985-11-05 |
| 4183396 | Seal for a regenerative heat-exchanger | Klaus Wiegard | 1980-01-15 |