Granted Patent
Utility
US 4,174,173 · App. 05/848,738
Photographic printer with interactive color balancing
Inventor:
John Pone, Jr.
Patented Case
View Patent ↗
Granted: Nov 13, 1979
Filed: Nov 4, 1977
Inventor
John Pone, Jr.
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.