Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845972 | Method for working the ends of steel pipe by upsetting and pressing | Hisamitsu Miyoshi, Keiichiro Mori | 1989-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845972 | Method for working the ends of steel pipe by upsetting and pressing | Hisamitsu Miyoshi, Keiichiro Mori | 1989-07-11 |