Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6390402 | Tape cartridge having lockout features | David A. Krula, Don Stanley, Thi Ho | 2002-05-21 |
| 6068207 | Tape cartridge having roller sets with substantially equal geometries | David A. Krula, Don Stanley, Thi Ho | 2000-05-30 |
| 6045079 | Tape cartridge having a large door and pivotally mounted write protect arm | David A. Krula, Don Stanley, Norbert Vollman, Edward Snelleman, Thi Ho | 2000-04-04 |