Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6012834 | Apparatus and method for automatic self-adapting control of sales and adjustment of prices to market movements in an automatic vending machine | Gunter Dueck, Hermann Stamm-Wilbrandt, Hans-Martin Wallmeier | 2000-01-11 |
| 4989295 | Telescopic guide wand for floor-cleaning appliances | Wieland Guhne, Peter Hannemann, Hans J. Birr | 1991-02-05 |
| 4851019 | Electric vacuum cleaner | Heinz-Jurgen Ahlf, Peter Wulf, Wieland Guhne, Manfred Eckart | 1989-07-25 |
| 4221019 | Floorcare device | Georg Haase | 1980-09-09 |