Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868665 | Charge-coupled device with varible storage capacity and constant clock frequency | Leonardus C. M. G. Pfennings | 1989-09-19 |
| 4851908 | Field number doubling circuit for a television signal | Petrus W. G. Welles | 1989-07-25 |