Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5914464 | Self-service device for processing a mail piece | — | 1999-06-22 |
| 5212867 | Method and unit for filling electrochemical cells | — | 1993-05-25 |
| 4390074 | Operating key for electrical scales | — | 1983-06-28 |
| 4383835 | Process for improving the light fastness of polyamide dyeings with copper complexes of schiff bases or ortho-hydroxy benzophenone | Reinhard Preuss, Joachim Grutze, Ulrich Beck, Hellmuth Pantke | 1983-05-17 |