Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6214286 | Hybrid induction skull melting | Donald E. Larsen, Jr., Richard Biondi, Donald L. Bierstine, Robert Larsen | 2001-04-10 |
| 5922148 | Ultra low sulfur superalloy castings and method of making | Jeffrey D. Irvine, Russell G. Vogt, Donald L. Bierstine, John R. Mihalisin, Jeffery S. Smith +3 more | 1999-07-13 |