Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876432 | Method for controlling a penetration bead | Yuji Sugitani, Yoshikazu Sato | 1989-10-24 |
| 4851639 | Apparatus for automatically welding cylindrical vessel | Yuji Sugitani, Yoshihiro Kanjo | 1989-07-25 |
| 4816639 | Automatic arc-welding method | Yuji Sugitani | 1989-03-28 |
| 4816640 | Automatic arc-welding method | Yuji Sugitani, Yosihiro Kanjo | 1989-03-28 |
| 4816641 | Automatic arc-welding method | Yuji Sugitani | 1989-03-28 |