Granted Patent
Utility
US 4,315,721 · App. 06/190,580
Fibrous web structure and its manufacture
Inventor:
Wayne P. Sorenson
Patented Case
View Patent ↗
Granted: Feb 16, 1982
Filed: Sep 25, 1980
Inventor
Wayne P. Sorenson
Assignee (at issue)
American Can Company
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.