Granted Patent
Utility
US 4,326,002 · App. 06/149,912
Multi-ply fibrous sheet structure and its manufacture
Inventor:
Galyn A. Schulz
Patented Case
View Patent ↗
Granted: Apr 20, 1982
Filed: May 15, 1980
Inventor
Galyn A. Schulz
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.