Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4957380 | Tab adjust function for an electronic typewriter to permit the shifting of tabs from a first to a second format | Mac A. Mathis, David R. Smith, Kathryn R. Stilz | 1990-09-18 |
| 4889439 | Automatic page end feature for an electronic typewriter | Sherry Anderson Cook, David R. Smith, Kathryn R. Stilz | 1989-12-26 |
| 4348739 | Terminal providing communication system information output | Randall L. Deaver, Thomas Freund | 1982-09-07 |