Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834786 | Method of manufacturing a preform for asymmetrical optical fiber | Ryozo Yamauchi, Tatsuyuki Oohashi, Osamu Fukuda | 1989-05-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834786 | Method of manufacturing a preform for asymmetrical optical fiber | Ryozo Yamauchi, Tatsuyuki Oohashi, Osamu Fukuda | 1989-05-30 |