Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5588019 | High performance induction melting coil | Robert S. Ruffini, Robert Madeira | 1996-12-24 |
| 5418811 | High performance induction melting coil | Robert S. Ruffini, Robert Madeira | 1995-05-23 |