Granted Patent
Utility
US 5,281,480 · App. 07/901,747
Optically variable multilayer structure on flexible web
Inventors:
Roger W. Phillips, Thomas Mayer, Gary S. Ash
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Jun 22, 1992
Inventors
Roger W. Phillips
Thomas Mayer
Gary S. Ash
Assignee (at issue)
Flex Products, 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.