Granted Patent
Utility
US 5,223,473 · App. 07/616,501
Self-cleaning carbonless paper
Inventors:
John F. Oliver, David J. Sanders
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Nov 21, 1990
Inventors
John F. Oliver
David J. Sanders
Assignee (at issue)
Xerox 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.