Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621714 | Optical pick-up apparatus having hologram and beam splitter with birefringent member and polarizing film | Shohei Kobayashi, Takeshi Yamazaki | 1997-04-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5621714 | Optical pick-up apparatus having hologram and beam splitter with birefringent member and polarizing film | Shohei Kobayashi, Takeshi Yamazaki | 1997-04-15 |