Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862268 | Addressable cable television control system with video format data transmission | John G. Campbell, Carl F. Schoeneberger, Richard M. Fogle, John R. Lemburg | 1989-08-29 |
| 4860379 | Data communications system | Carl F. Schoeneberger | 1989-08-22 |