Granted Patent
Utility
US 5,926,319 · App. 08/604,943
Screens having graded refractive index lenses
Inventors:
Nicholas John Phillips, William Nevil Heaton Johnson
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Apr 22, 1996
Inventors
Nicholas John Phillips
William Nevil Heaton Johnson
Assignees (at issue)
Nashua Corporation
Nashua Photo Ltd.
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.