Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828518 | Double reverse revolution propeller apparatus | Masatoshi Kouda, Katsumi Yonekura, Noboru Tohge, Hiroyuki Hashimoto, Shoji Fukushima +4 more | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828518 | Double reverse revolution propeller apparatus | Masatoshi Kouda, Katsumi Yonekura, Noboru Tohge, Hiroyuki Hashimoto, Shoji Fukushima +4 more | 1989-05-09 |