Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6664003 | Method for enhancing lead oxidation during production of lead acid batteries | Andreas Siegmund | 2003-12-16 |
| 6649306 | Alloy for thin positive grid for lead acid batteries and method for manufacture of grid | — | 2003-11-18 |