Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4295868 | Filter for cleaning hot gases | Heinz Holter, Heinz Gresch, Heinrich Igelbuscher, Ekkehard Weber | 1981-10-20 |
| 4257112 | Electronic time-piece with barometric indicator | — | 1981-03-17 |