Granted Patent
Utility
US 5,210,010 · App. 07/876,834
Silver halide developing solutions
Inventor:
Ross Fielding
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Apr 30, 1992
Inventor
Ross Fielding
Assignee (at issue)
Ilford AG
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.