Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808812 | Composite type light sensor having plural sensors with different light receiving angle optical characteristics | Akira Tanaka, Toshiaki Ikeda, Toru Tanabe, Seiichi Suto, Takao Seto | 1989-02-28 |