Granted Patent
Utility
US 6,546,772 · App. 09/839,688
Rolling mill, especially for inclined or Diescher rolling
Inventors:
Walter Hoffgen, Paul J. Koenen
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Apr 20, 2001
Inventors
Walter Hoffgen
Paul J. Koenen
Assignee (at issue)
SMS DEMAG LLC
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.