Granted Patent
Utility
US 5,474,879 · App. 08/380,781
Radiographic film developers containing ascorbic acid and thioether development accelerators
Inventors:
Alan S. Fitterman, Joan F. Rachel
Patented Case
View Patent ↗
Granted: Dec 12, 1995
Filed: Jan 30, 1995
Inventors
Alan S. Fitterman
Joan F. Rachel
Assignee (at issue)
EASTMAN KODAK 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.