Granted Patent
Utility
US 4,647,173 · App. 06/826,031
Apparatus for the liquid-processing of light-sensitive sheet material
Inventor:
Meinrad Schar
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Feb 4, 1986
Inventor
Meinrad Schar
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.