Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6660108 | Method for manufacturing a fin material for brazing | Takeyoshi Doko | 2003-12-09 |
| 6620265 | Method for manufacturing an aluminum alloy fin material for brazing | Takeyoshi Doko | 2003-09-16 |