Granted Patent
Utility
US 5,478,706 · App. 08/206,196
Alkaline black-and-white developer for silver halide photographic material
Inventors:
Carlo Marchesano, Filippo Faranda, Franco Buriano
Patented Case
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Granted: Dec 26, 1995
Filed: Mar 3, 1994
Inventors
Carlo Marchesano
Filippo Faranda
Franco Buriano
Assignee (at issue)
Minnesota Mining and Manufacturing 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.