Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4309567 | Furnace forehearth electrode groups having less than 90.degree. phase difference between adjacent groups | — | 1982-01-05 |
| 4282393 | Electrode melting-Z type electrode firing with continuous zones | — | 1981-08-04 |
| 4211887 | Electrical furnace, zones balanced with a symmetrically tapped transformer | — | 1980-07-08 |