Granted Patent
Utility
US 4,057,818 · App. 05/590,078
Automatic replenisher system for a photographic processor
Inventors:
Alfred J. Gaskell, Ralph L. Charnley
Patented Case
View Patent ↗
Granted: Nov 8, 1977
Filed: Jun 25, 1975
Inventors
Alfred J. Gaskell
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.