Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321816 | Metal tube and apparatus and method for manufacturing the same | Yoshihiko Nakahara, Norihiro Tsujii, Kenichi Nakanishi, Yuji Sakai | 1982-03-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321816 | Metal tube and apparatus and method for manufacturing the same | Yoshihiko Nakahara, Norihiro Tsujii, Kenichi Nakanishi, Yuji Sakai | 1982-03-30 |