Granted Patent
Utility
US 6,494,993 · App. 09/830,817
Multi-layer web formation by means of a simple basic-stock system
Inventor:
Antti Suonpera
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Apr 27, 2001
Inventor
Antti Suonpera
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.