Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885013 | Arrangement of filter bags in electric vacuum cleaners | Gieland Guhne, Manfred Eckhart | 1989-12-05 |
| 4851019 | Electric vacuum cleaner | Jurgen Jager, Peter Wulf, Wieland Guhne, Manfred Eckart | 1989-07-25 |