Granted Patent
Utility
US 4,565,775 · App. 06/689,755
Process for the production of photographic images by the silver dye bleach process
Inventor:
Eddy Forte
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Jan 9, 1985
Inventor
Eddy Forte
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.