Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666018 | Cathode with fast heat switch-on and switch-off mechanism and grid-type electron tube including such a cathode | Michel Langlois | 1997-09-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666018 | Cathode with fast heat switch-on and switch-off mechanism and grid-type electron tube including such a cathode | Michel Langlois | 1997-09-09 |