Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5218206 | Method for determining the condition of a roadway surface | Walter Schaube | 1993-06-08 |
| 5105157 | Apparatus for determining the average water film thickness of road surfaces | — | 1992-04-14 |
| 4831248 | Electron beam controlled bulk semiconductor switch with cathodoluminescent electron activation | Karl H. Schoenbach, Vishnukumar K. Lakdawala, Rudolf Germer | 1989-05-16 |
| 4759029 | Gas laser with different positional dependent mutual spacings between the electrodes | Horst Seunik, Gerd Herziger, Helmut Schuelke, Rolf Wester | 1988-07-19 |