Granted Patent
Utility
US 4,174,169 · App. 05/882,804
Anti-oxidation fluid replenisher control system for processor of photosensitive material
Inventors:
Theodore A. Melander, Ralph L. Charnley
Patented Case
View Patent ↗
Granted: Nov 13, 1979
Filed: Mar 2, 1978
Inventors
Theodore A. Melander
Ralph L. Charnley
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.