Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864586 | Hollow cathode glow discharge ring laser block and electrode structure for ring laser angular rate sensors | — | 1989-09-05 |
| 4821281 | Hollow cathode glow discharge ring laser angular rate sensor | Hendrik J. Oskam | 1989-04-11 |