Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6802883 | Iron-based sintered alloy for use as valve seat and its production method | Akiyoshi Ishibashi | 2004-10-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6802883 | Iron-based sintered alloy for use as valve seat and its production method | Akiyoshi Ishibashi | 2004-10-12 |