Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875756 | Fresnel lens apparatus for optically coupling a plurality of data channels | Marvin F. Estes | 1989-10-24 |
| 4854662 | Optical data signal apparatus for optically coupling a plurality of data channels between stationary and rotating systems | Marvin F. Estes | 1989-08-08 |