Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4639643 | Thyratron interrupters | Hugh Menown | 1987-01-27 |
| 4620135 | Electric circuit interrupting devices | Raymond P. Knight, John R. Shepheard | 1986-10-28 |
| 4559466 | Metal vapor segmented discharge tubes | Colin Archibold Pirrie, Arthur Maitland | 1985-12-17 |
| 4429253 | Thyratrons | Christopher NEALE, Hugh Menown | 1984-01-31 |
| 4362972 | Thyratrons | — | 1982-12-07 |