Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5185933 | Shaving foil | — | 1993-02-16 |
| 5105541 | Shaving and hair trimming apparatus | Christian Schmieder | 1992-04-21 |
| 5007168 | Electric dry shaving apparatus with a movable shaving head arrangement | Karl Trolltsch, Bernd Tewes | 1991-04-16 |
| 4991295 | Shaving head for dry shaving apparatus | — | 1991-02-12 |
| 4751780 | Cutter block for dry shaving apparatus | Karl Trolltsch | 1988-06-21 |
| 4669322 | Device for converting the rotary motion of an eccentric into a reciprocating motion | Karl Trolltsch | 1987-06-02 |
| 4649762 | Rocker arm drive for electrical appliances | Karl Trolltsch | 1987-03-17 |
| 4283848 | Dryshaver | Roland Ullmann, Otto Schweingruber | 1981-08-18 |