Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880374 | Filter exchange device for an extrusion molding machine | Sei Kawahara, Mitsuhiro Goto | 1989-11-14 |
KH
Ken Hamamura
Overall (1989): #88,815 of 140,708Top 65%
1
Patents 1989