Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4904896 | Vacuum electron tube having an oxide cathode comprising chromium reducing agent | — | 1990-02-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4904896 | Vacuum electron tube having an oxide cathode comprising chromium reducing agent | — | 1990-02-27 |