Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4570978 | Rotary coupling for a plurality of independent fluids | — | 1986-02-18 |
| 4517695 | Method and apparatus for balancing of out-of-balance forces in centrifuges or combined washing machines-spin driers | Ernst Hoffmann, Leonhard Spiewok, Jakob Rettich | 1985-05-21 |
| 4432111 | Procedure for washing clothes | Ernst Hoffmann | 1984-02-21 |
| 4344198 | Procedure for washing clothes | Ernst Hoffmann | 1982-08-17 |
| 4249400 | Water-extraction press | — | 1981-02-10 |
| 4192518 | Device for sealing an aperture in a partition wall through which a rotating drum extends | — | 1980-03-11 |