Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855739 | Marine autopilot apparatus | Toshio Miyayama, Nakayasu Hirono | 1989-08-08 |
| 4811679 | Marine automatic steering apparatus | Toshio Miyayama, Mitsuo Nakayama, Koichi Nishimura | 1989-03-14 |