Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5226941 | Dust filter bag | Betra Lehmann | 1993-07-13 |
| 4463472 | Device for mounting a lid on a housing of a vacuum cleaner | — | 1984-08-07 |
| 4419782 | Fill-up indication arrangement for a vacuum cleaner | Erhard Sobczyk | 1983-12-13 |
| 4330900 | Vacuum cleaner with filling-condition indicator | Manfred Dorr, Georg Haase | 1982-05-25 |
| 4289416 | Arrangement for mounting and dismounting pivoted levers in tool housings | Hans J. Birr | 1981-09-15 |
| 4286885 | Filler cap for a mixer | Manfred Dorr | 1981-09-01 |