Granted Patent
Utility
US 6,131,306 · App. 09/399,700
Method and apparatus for drying a fiber web
Inventor:
Elias Retulainen
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Sep 21, 1999
Inventor
Elias Retulainen
Assignee (at issue)
Valmet Aktiebolag
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.