Granted Patent
Utility
US 5,873,404 · App. 08/889,025
Method and apparatus for continuously casting metal
Inventors:
Erich Luginbuhl, Michel Meyer, Rudolf Roder, Marcel Witschi, Ernst Zurcher
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Jul 7, 1997
Inventors
Erich Luginbuhl
Michel Meyer
Rudolf Roder
Marcel Witschi
Ernst Zurcher
Assignee (at issue)
Lauener Engineering, Ltd.
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.