Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7886440 | Manufacture method for inner-fin tube and manufacture device for the same | Katsuji Hattori | 2011-02-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7886440 | Manufacture method for inner-fin tube and manufacture device for the same | Katsuji Hattori | 2011-02-15 |