Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831335 | High gain miniature crossed-field amplifier | Guilford R. MacPhail | 1989-05-16 |
| 4814720 | Low noise crossed-field amplifier | Guilford R. MacPhail, Edward M. Doyle | 1989-03-21 |