Granted Patent
Utility
US 6,418,840 · App. 09/402,212
Calendering method and a calender that makes use of the method
Inventor:
Mika Viljanmaa
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Sep 30, 1999
Inventor
Mika Viljanmaa
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.