Granted Patent
Utility
US 4,980,273 · App. 07/385,310
Matted photographic imaging materials
Inventor:
Manfred Fautz
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Jul 26, 1989
Inventor
Manfred Fautz
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.