Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6680140 | Maintenance-free industrial type vented cell storage battery | Jean-Louis Liska | 2004-01-20 |
| 6673483 | Sealed storage cell with an improved recombination device | Christian Jordy, Jean-Louis Liska | 2004-01-06 |