Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5629879 | Control device for the actuation of switchgears according to a time program | — | 1997-05-13 |
| 5619131 | Parallel analog-digital monitoring system | Gerhard H. Ulrich | 1997-04-08 |