Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4649379 | Data display apparatus with character refresh buffer and row buffers | David A. Canton, Nicholas B. Sargeant, Roger J. Llewelyn | 1987-03-10 |
| 4644340 | Programmable timing circuit for cathode ray tube | Roger J. Llewelyn | 1987-02-17 |
| 4410840 | Color cathode ray tube display apparatus with compensation for errors due to interfering magnetic fields | John Beeteson, Krzystof T. Jarzebowski | 1983-10-18 |