Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885218 | Battery exhaust gas plug filter and process for manufacturing the same | Ichiro Tajima | 1989-12-05 |
MA
Masayasu Andou
Overall (1989): #82,409 of 140,708Top 60%
1
Patents 1989