Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808883 | Discharge lamp device having semiconductor ceramic cathode | Hitoshi Masumura, Munemitsu Hamada | 1989-02-28 |
SI
Shouichi Iwaya
Overall (1989): #57,726 of 140,708Top 45%
1
Patents 1989