Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878866 | Thermionic cathode structure | Yoshiharu Mori, Mitsuaki Saito, Hirotoshi Hagiwara, Kenichi Ehara | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878866 | Thermionic cathode structure | Yoshiharu Mori, Mitsuaki Saito, Hirotoshi Hagiwara, Kenichi Ehara | 1989-11-07 |