Granted Patent
Utility
US 6,401,355 · App. 09/743,673
Method and apparatus for manufacturing calendered paper
Inventors:
Pekka Linnonmaa, Antti Heikkinen
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Jan 10, 2001
Inventors
Pekka Linnonmaa
Antti Heikkinen
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.