Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6642483 | High-speed CO2 gas welding method | Yasuhiro Koga, Hiroyuki Handa, Haruki Nakashima, Takafumi Mitsushio | 2003-11-04 |
| 6627850 | Consumable electrode type arc welding method and device therefor | Yasuhiro Koga, Takahide Hirayama, Satoru Nio, Haruki Nakashima, Tsuneo Mita | 2003-09-30 |