Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5317233 | Vacuum tube including grid-cathode assembly with resonant slow-wave structure | Erling L. Lien | 1994-05-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5317233 | Vacuum tube including grid-cathode assembly with resonant slow-wave structure | Erling L. Lien | 1994-05-31 |