Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4680827 | Vacuum cleaner | — | 1987-07-21 |
| 4524823 | Heat exchanger having a helical distributor located within the connecting tank | Bohumil Humpolik, Hans-Joachim Ingelmann, Karl-Heinz Staffa | 1985-06-25 |
| 4488627 | Electromagnetic two-stage clutch | Gerhard Streich | 1984-12-18 |