Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808883 | Discharge lamp device having semiconductor ceramic cathode | Shouichi Iwaya, Hitoshi Masumura | 1989-02-28 |
MH
Munemitsu Hamada
Overall (1989): #74,365 of 140,708Top 55%
1
Patents 1989