Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660944 | Multicell storage battery | Dietrich Sprengel, Eberhard Niggemann | 1997-08-26 |
| 5639569 | Gastight, sealed metal oxide/metal hydride storage battery | Guangsen Chen, Jürgen Lindner | 1997-06-17 |