Granted Patent
Utility
US 5,673,320 · App. 08/392,713
Method and apparatus for image-based validations of printed documents
Inventors:
Lawrence A. Ray, Richard N. Ellson
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Feb 23, 1995
Inventors
Lawrence A. Ray
Richard N. Ellson
Assignee (at issue)
EASTMAN KODAK COMPANY
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.