Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4988199 | Method and apparatus for measuring the concentration of optically active substances | — | 1991-01-29 |
| 4675483 | Contact arrangement for vacuum switches | Rudolf Gebel | 1987-06-23 |
| 4620074 | Contact arrangement for vacuum switches | Roman Renz | 1986-10-28 |
| 4421071 | Control method and control apparatus for operating a reformed gas generator and an internal combustion engine connected thereto | — | 1983-12-20 |