Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4197487 | Beam-index tube apparatus having deflection field correcting elements | Shigeo Takenaka, Eizaburo Hamano | 1980-04-08 |
| 4194140 | Beam-indexing color image-presentation cathode ray tube | Eizaburo Hamano | 1980-03-18 |