Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6195581 | Process for evaluating the signal of an infrared thermometer, and infrared thermometer | Frank Beerwerth, Klaus Heubach, Manfred Kaiser, Bernhard Kraus, Katja Honnefeller +2 more | 2001-02-27 |
| 6149297 | Infrared radiation thermometer | Frank Beerwerth, Heinz Bultges | 2000-11-21 |
| 5201781 | Coupling for the cutter assembly of twin-head shavers | Helmut Durr, Hans-Eberhard Heintke | 1993-04-13 |
| 5159755 | Hinged frames for a dry shaving apparatus | Gerhard Schafer, Jurgen Wolf | 1992-11-03 |
| 4932121 | Long-hair trimming device for dry shaving apparatus | Klaus Oprach, Gerhard Schafer | 1990-06-12 |
| 4930217 | Electric shaving apparatus with a shaving head control means | Jurgen Wolf, Hans-Eberhard Heintke, Michael Odemer | 1990-06-05 |