Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880477 | Process of making an austempered ductile iron article | William J. Hayes, Harry A. Matrone | 1989-11-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880477 | Process of making an austempered ductile iron article | William J. Hayes, Harry A. Matrone | 1989-11-14 |