Granted Patent
Utility
US 6,524,229 · App. 09/829,473
Composite-construction roll and a method for manufacturing it
Inventors:
Antti Pramila, Mauri Rukajärvi, Tuomo Kurkela, Juha Isometsä
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Apr 9, 2001
Inventors
Antti Pramila
Mauri Rukajärvi
Tuomo Kurkela
Juha Isometsä
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.