Granted Patent
Utility
US 6,245,487 · App. 09/383,855
Methods for enhancing images on relief image printing plates
Inventor:
Alvin Varnard Randall
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Aug 26, 1999
Inventor
Alvin Varnard Randall
Assignee (at issue)
Polyfibron Technologies, 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.