Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863199 | Separation preventive pipe joint | Toshiyuki Iwamoto, Noriyuki Arakawa, Terutaka Narita | 1989-09-05 |
SH
Sadamune Hojo
Overall (1989): #59,432 of 140,708Top 45%
1
Patents 1989