Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142960 | Threaded connection for oil well | Masaaki Sugino, Takashi Okada | 2021-10-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142960 | Threaded connection for oil well | Masaaki Sugino, Takashi Okada | 2021-10-12 |