Granted Patent
Utility
US 6,708,608 · App. 10/181,880
Device and method preventing evaporation of moisture and heat losses in calendering
Inventor:
Mika Viljanmaa
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Jul 23, 2002
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.