Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4458352 | Method and device providing mobility to a contact shoe independent of an electrode in an electric-arc furnace | Frans H. Tuovinen, Risto M. Heikkila, Martti Jankkila, Matti E. Honkaniemi | 1984-07-03 |
| 4443878 | Method of mixing a hot furnace gas with another gas before the removal of the furnace gas from the furnace and a hood therefore | Frans H. Tuovinen, Risto M. Heikkila | 1984-04-17 |