Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885013 | Arrangement of filter bags in electric vacuum cleaners | Heinz-Jurgen Ahlf, Gieland Guhne | 1989-12-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885013 | Arrangement of filter bags in electric vacuum cleaners | Heinz-Jurgen Ahlf, Gieland Guhne | 1989-12-05 |