Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699690 | Method and apparatus for manufacturing hollow steel bars | Shotaro Hamazaki, Norimasa Kameoka, Atsuhumi Okamoto | 1997-12-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699690 | Method and apparatus for manufacturing hollow steel bars | Shotaro Hamazaki, Norimasa Kameoka, Atsuhumi Okamoto | 1997-12-23 |