Granted Patent
Utility
US 4,958,673 · App. 07/014,026
Papermaking machine and a seamed papermaker's fabric
Inventor:
Marcel Dufour
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Feb 12, 1987
Inventor
Marcel Dufour
Assignee (at issue)
Asten, 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.