Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7951475 | Vent valve for acid batteries | Wolfgang Imhof, Friedrich Kramm | 2011-05-31 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7951475 | Vent valve for acid batteries | Wolfgang Imhof, Friedrich Kramm | 2011-05-31 |