Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288870 | Integrated telephone transmission and switching system | John C. McDonald, James R. Baichtal, Bradley A. Helliwell, Alexander C. Ling | 1981-09-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4288870 | Integrated telephone transmission and switching system | John C. McDonald, James R. Baichtal, Bradley A. Helliwell, Alexander C. Ling | 1981-09-08 |