Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836848 | Fe-based sintered alloy for valve seats for use in internal combustion engines | Yoshimi Ishikawa | 1989-06-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836848 | Fe-based sintered alloy for valve seats for use in internal combustion engines | Yoshimi Ishikawa | 1989-06-06 |