Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636542 | Piercing-rolling method and piercing/rolling apparatus for seamless steel tube | Chihiro Hayashi, Kazuhiro Shimoda | 1997-06-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636542 | Piercing-rolling method and piercing/rolling apparatus for seamless steel tube | Chihiro Hayashi, Kazuhiro Shimoda | 1997-06-10 |