Granted Patent
Utility
US 6,475,342 · App. 09/535,382
Method of and arrangement for treating a fiber web
Inventor:
Elias Retulainen
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Mar 24, 2000
Inventor
Elias Retulainen
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.