Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852791 | Method for making corrosion resistance heat exchangers | Tatsuo Otsuka, Noboru Yamaguchi | 1989-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852791 | Method for making corrosion resistance heat exchangers | Tatsuo Otsuka, Noboru Yamaguchi | 1989-08-01 |