Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5038279 | Direct hot-keying with reset of printer parameters for a secondary application including a typewriter emulator | Randel L. Bertram, Douglas E. Hays | 1991-08-06 |
| 4789255 | Correction buffer | Douglas E. Hays | 1988-12-06 |
| 4729678 | Method and apparatus for producing characters in bold form | Douglas E. Hays | 1988-03-08 |