Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5034915 | Data storage system for transferring last entered information from static memory to magnetic disk upon recovering from data storage interruption | Michael Afheldt | 1991-07-23 |
| 4776007 | Solid state trunk circuit | Douglas Oddy | 1988-10-04 |
| 4694482 | Digital tone detector | Gordon J. Reesor, Patrick R. Beirne | 1987-09-15 |
| 4682328 | Dynamic memory refresh and parity checking circuit | John R. Ramsay | 1987-07-21 |
| 4669114 | Digital tone detector | Gordon J. Reesor, Patrick R. Beirne | 1987-05-26 |
| 4527014 | Loudspeaking telephone | — | 1985-07-02 |