Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10373149 | Secure data entry using a card reader with minimal display and input capabilities having a display | Elliot Sather | 2019-08-06 |
| 5374004 | Low-friction, belt-driven tape cartridge | — | 1994-12-20 |
| 5358193 | Tape guide for a data cartridge | David D. Madsen, David P. Smith | 1994-10-25 |
| 4581189 | Method of making a belt for belt-driven recording tape pack | David P. Smith | 1986-04-08 |
| 4466564 | Belt for belt-driven recording tape pack | David P. Smith | 1984-08-21 |
| 4300179 | Composite magnetic head with multitrack support structure | Charles A. Barnes | 1981-11-10 |