Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4588221 | Segmented door opener | Cardell E. Miller, Gene A. Tracy, George L. Engstrom | 1986-05-13 |
| 4440986 | Microprocessor controller for simultaneously controlling a PBX and providing multiple user access for general purpose data processing | — | 1984-04-03 |