Issued Patents 2016
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9321119 | Combination welding method using combination of gas metal arc welding and submerged-arc welding and combination arc welding machine | Naoya Hayakawa, Kenji Oi, Atsushi Ishigami, Kenji Shimada | 2016-04-26 |