Granted Patent
Utility
US 4,432,475 · App. 06/321,913
Automatic wash tank drain/fill apparatus for processor of photosensitive material
Inventors:
Conrad E. Lee, Jerry A. Caflisch
Patented Case
View Patent ↗
Granted: Feb 21, 1984
Filed: Nov 16, 1981
Inventors
Conrad E. Lee
Jerry A. Caflisch
Assignee (at issue)
Pako Corporation
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.