Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4998429 | Method for drawing tubular material | Yukio Yamanoi, Masahiro Iwata, Kazumi Kato | 1991-03-12 |
| 4860568 | Tubular material drawing apparatus for manufacturing precision tube | Yukio Yamanoi, Masahiro Iwata, Kazumi Kato | 1989-08-29 |