Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5625273 | Battery safety device | Charles Meierdierck, Donald F. Fagon | 1997-04-29 |
| 4431713 | Method for adapting high voltage cells or batteries for lower volt rated applications | John P. Mathews, Thomas Yatabe | 1984-02-14 |