Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814670 | Cathode ray tube apparatus having focusing grids with horizontally and vertically oblong through holes | Hiroshi Suzuki, Masao Natsuhara | 1989-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814670 | Cathode ray tube apparatus having focusing grids with horizontally and vertically oblong through holes | Hiroshi Suzuki, Masao Natsuhara | 1989-03-21 |