Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4588894 | Vacuum tube and a method for manufacturing the same | — | 1986-05-13 |
| 4433230 | Method of manufacturing a vacuum vessel provided with a radiation-permeable window | Tetsu Sano, Hisao Ishiwata, Tatsuo Simizu | 1984-02-21 |