Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825126 | Ceramic envelope device for high-pressure discharge lamp | Mikio Kariya | 1989-04-25 |
| 4808881 | Ceramic envelope device for high-pressure discharge lamp | Mikio Kariya | 1989-02-28 |
| 4800320 | Discharge tube for a high pressure metal vapor discharge lamp and a method of manufacturing the same | Takehiro Kajihara, Senji Atsumi | 1989-01-24 |