Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685190 | Expanding mandrel, expanding method and expanding apparatus using the expanding mandrel and heat exchanger with heat exchanging tubes expanded by the expanding method | Yoshitaka Yamamoto, Isao Ogami, Noriaki Nakao, Takuro Katagami | 1997-11-11 |