Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9029001 | Separator for gel electrolyte storage batteries | Friedrich Kramm, Georg Meckl, Harald Niepraschk | 2015-05-12 |
| 5664321 | Process for the production of a lead accumulator | Olaf Sielemann, Harald Niepraschk | 1997-09-09 |