Granted Patent
Utility
US 5,923,698 · App. 08/805,677
Method of operating an arc furnace, and an arc furnace
Inventors:
Andreas Loebner, Jan Oelscher, Sven-Einar Stenkvist
Patented Case
View Patent ↗
Granted: Jul 13, 1999
Filed: Feb 27, 1997
Inventors
Andreas Loebner
Jan Oelscher
Sven-Einar Stenkvist
Assignee (at issue)
Concast Standard AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.