Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877462 | Process for producing oil quench hardening and tempering and hard drawn steel wire of shaped section | — | 1989-10-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877462 | Process for producing oil quench hardening and tempering and hard drawn steel wire of shaped section | — | 1989-10-31 |