Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851019 | Electric vacuum cleaner | Heinz-Jurgen Ahlf, Peter Wulf, Wieland Guhne, Manfred Eckart | 1989-07-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851019 | Electric vacuum cleaner | Heinz-Jurgen Ahlf, Peter Wulf, Wieland Guhne, Manfred Eckart | 1989-07-25 |