Granted Patent
Utility
US 6,589,424 · App. 09/560,408
Method of making screen cylinder and screen cylinder
Inventor:
Erkka Nieminen
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Apr 27, 2000
Inventor
Erkka Nieminen
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.