Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821567 | Running speed detecting device for marine vessels | Tomoji Nakamura, Kazuhiro Nakamura | 1989-04-18 |
RS
Ryoji Sawada
Sanshin Industries: 1 patents #14 of 39Top 40%
Overall (1989): #59,746 of 140,708Top 45%
1
Patents 1989