Granted Patent
Utility
US 4,168,121 · App. 05/896,812
Automatic snow/beach correction for photographic printer
Inventors:
Jan T. Freier, Ronald B. Harvey, John Pone, Jr.
Patented Case
View Patent ↗
Granted: Sep 18, 1979
Filed: Apr 17, 1978
Inventors
Jan T. Freier
Ronald B. Harvey
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.