Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9833825 | Production method and production device for tube with spirally grooved inner surface | Takeshi Sakagami, Yuki Hateruma | 2017-12-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9833825 | Production method and production device for tube with spirally grooved inner surface | Takeshi Sakagami, Yuki Hateruma | 2017-12-05 |