Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863199 | Separation preventive pipe joint | Sadamune Hojo, Noriyuki Arakawa, Terutaka Narita | 1989-09-05 |
TI
Toshiyuki Iwamoto
Overall (1989): #48,936 of 140,708Top 35%
1
Patents 1989