Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4407020 | Automatic compensation circuit and method | David G. Messerschmitt, Ronald J. Hagen | 1983-09-27 |
| 4288870 | Integrated telephone transmission and switching system | John C. McDonald, James R. Baichtal, Alexander C. Ling, Craig P. Schaffter | 1981-09-08 |