Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5060227 | Digital telephone switch with simultaneous dual PCM format compatibility | Barry D. Lubin, 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 | Barry D. Lubin, Bruce A. Bergendahl | 1989-08-22 |