Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886338 | Optical fiber event sensor | Masao Yafuso | 1989-12-12 |
| 4849172 | Optical sensor | Masao Yafuso, Cheng F. Yan, William W. Miller | 1989-07-18 |
| 4798738 | Micro sensor | Masao Yafuso | 1989-01-17 |