Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4429790 | Latch and handle assembly for magnetic recording disc cartridge | Dean L. Christensen | 1984-02-07 |
| 4235339 | Latch and carrying handle assembly for magnetic recording disc cartridge | Dean L. Christensen, Leonard C. Badour | 1980-11-25 |