Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827147 | Engine-powered portable working apparatus | — | 1989-05-02 |
SM
Sadao Mizushima
Overall (1989): #59,191 of 140,708Top 45%
1
Patents 1989