Granted Patent
Utility
US 5,625,397 · App. 08/344,114
Dot on dot ink jet printing using inks of differing densities
Inventors:
Donald R. Allred, John L. Ingraham, Foster M. Fargo, Jr.
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Nov 23, 1994
Inventors
Donald R. Allred
John L. Ingraham
Foster M. Fargo, Jr.
Assignee (at issue)
Iris Graphics, Inc.
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.