Granted Patent
Utility
US 4,238,564 · App. 06/047,465
Recording material for color photography
Inventor:
Mario Fryberg
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Jun 11, 1979
Inventor
Mario Fryberg
Assignee (at issue)
Ciba-Geigy
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.