Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887002 | Gas discharge lamp and apparatus utilizing the same | Yoshitomi Dobashi | 1989-12-12 |
| 4871941 | Gas discharge lamp with different film thicknesses | Yoshitomi Dobashi | 1989-10-03 |