Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6101029 | Microscope condenser with an integrated catch pan | Norbert Gaul | 2000-08-08 |
| 5684624 | Lens change-over device with centerable reception rings | Karl-Josef Schalz | 1997-11-04 |
| 4733954 | Microscope support | Guenter Reinheimer, Robert Lisfeld, Walter Voigt | 1988-03-29 |
| 4427270 | Microscope frame | Winfried Kraft, Walter Froboese, Guenter Reinheimer | 1984-01-24 |
| 4284417 | Method for controlling electric power supplied to corona generating electrodes in an electrostatic precipitator | Robert O. Reese, James A. Sholly | 1981-08-18 |
| 4284327 | Microscope with attachable illuminating devices | Winfried Kraft, Robert Lisfeld, Willi Hagner, Horst Frimmel | 1981-08-18 |
| 4283111 | Microscope stand with protected turret | Heinrich Janke, Winfried Kraft, Robert Lisfeld | 1981-08-11 |
| 4267502 | Precipitator voltage control system | Robert O. Reese, James T. Hartman | 1981-05-12 |