Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865414 | Reinforcing members for connecting optical fibers and production thereof | Takashi Ohta | 1989-09-12 |
| 4825126 | Ceramic envelope device for high-pressure discharge lamp | Hirotsugu Izumiya | 1989-04-25 |
| 4808881 | Ceramic envelope device for high-pressure discharge lamp | Hirotsugu Izumiya | 1989-02-28 |