Granted Patent
Utility
US 4,245,034 · App. 06/002,914
Method and apparatus for regenerating photographic processing solution
Inventors:
Arnost Libicky, Walter E. Mueller
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Jan 12, 1979
Inventors
Arnost Libicky
Walter E. Mueller
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.