Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6492768 | Cathode ray tube having an improved indirectly heated cathode | Sachio Koizumi, Terutoshi Ichihara | 2002-12-10 |
| 6335590 | Cathode ray tube having an indirectly heated cathode provided with a heater having a structure which substantially prevents cracks in an insulating coating thereof | Sachio Koizumi | 2002-01-01 |