Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621839 | Optical waveguide device having substrate made of ferroelectric crystals | Tetsuya Ejiri | 1997-04-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621839 | Optical waveguide device having substrate made of ferroelectric crystals | Tetsuya Ejiri | 1997-04-15 |