Granted Patent
Utility
US 6,474,589 · App. 09/555,657
Change device of a reel-up and method for changing a roll
Inventors:
Petri Enwald, Pauli Kytönen, Seppo Luomi
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Aug 1, 2000
Inventors
Petri Enwald
Pauli Kytönen
Seppo Luomi
Assignee (at issue)
Metso Paper Inc.
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.