Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4794798 | Device for measuring Young's modulus and internal friction of specimen | Taira Okamoto, Masahiko Shimada, Hisao Takeuchi | 1989-01-03 |
KM
Ken-ichi Matsushita
Overall (1989): #88,278 of 140,708Top 65%
1
Patents 1989