Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10421150 | Friction stir welding device | Koichi Ishiguro | 2019-09-24 |
| 10335895 | Friction stir welding device and friction stir welding method | Koichi Ishiguro, Kenji Ando | 2019-07-02 |