Granted Patent
Utility
US 6,813,921 · App. 10/199,659
Method for rolling metal material into a metal strip
Inventors:
Dan Hall, Ilpo Koppinen, George E. Mayer, Brian Swank
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jul 19, 2002
Inventors
Dan Hall
Ilpo Koppinen
George E. Mayer
Brian Swank
Assignee (at issue)
Outokumpu Oyj
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.