Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821038 | Method of and apparatus for Loran-C message communication with reduced skywave navigation location errors and the like | — | 1989-04-11 |
| 4800391 | Method of and apparatus for message communication on Loran-C navigational signal broadcasts and the like with reduced navigation errors | — | 1989-01-24 |