Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887781 | Transmitters | Arthur C. Fry, Robert L. H. Malpass, Brian Matthews, Michael S. Peters | 1989-12-19 |
| 4875646 | Aircraft navigation systems | Arthur C. Fry, Robert L. H. Malpass, Brian Matthews, Michaels S. Peters | 1989-10-24 |