Granted Patent
Utility
US 4,803,523 · App. 07/049,771
Means and method for color separation and for reproduction
Inventor:
Robert E. Pearson
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: May 13, 1987
Inventor
Robert E. Pearson
Assignee (at issue)
T. W. Secrest
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.