Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5060227 | Digital telephone switch with simultaneous dual PCM format compatibility | Roger W. Finley, Bruce A. Bergendahl | 1991-10-22 |
| 4860281 | Individual subchannel loopback in the PCM interfaces of a digital telephone exchange with control of the outbound path | Roger W. Finley, Bruce A. Bergendahl | 1989-08-22 |
| RE31814 | Three-party conference circuit for digital time-division-multiplex communication systems | — | 1985-01-22 |
| 4301531 | Three-party conference circuit for digital time-division-multiplex communication systems | — | 1981-11-17 |
| 4268722 | Radiotelephone communications system | Richard I. Little, Stephen L. Spear | 1981-05-19 |