Granted Patent
Utility
US 6,540,873 · App. 10/083,077
Board machine and method of manufacturing a multilayer cardboard web
Inventor:
Per Anders Artur Leandersson
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Feb 26, 2002
Inventor
Per Anders Artur Leandersson
Assignee (at issue)
Metso Paper Karlstad AB
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.