Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6423423 | Formed strip and roll forming | Natsuko Hirayanagi, Harumi Obata | 2002-07-23 |
| 6418614 | Cutting apparatus for roll-formed product of roll-forming unit | Harumi Obata | 2002-07-16 |