Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5188231 | Battery package with removable voltage indicator means | Larry Kivell, Charles E. Kiernan, Lorne H. Tittel | 1993-02-23 |
| 4723656 | Battery package with battery condition indicator means | Charles E. Kiernan | 1988-02-09 |