Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5008613 | Voltage tester for graduated optical display of a voltage and method for its manufacture | Heinrich Wolfgang Steinel, D-F Schulze-Froehlich | 1991-04-16 |
| 4778770 | Process for making sensor elements in a retaining frame for a pyrodetector | Hans Meixner, Reinhard Freitag, Felix Pettke, Hans Siwon | 1988-10-18 |
| 4751388 | Sensor element in a retaining frame for a pyrodetector and method for the manufacture thereof | Hans Meixner, Reinhard Freitag, Felix Pettke, Hans Siwon | 1988-06-14 |
| 4641519 | Device for the determination of rotational speed | Hans-Christof Klein, Hermann Oesterle, Juergen Jendroska | 1987-02-10 |