Granted Patent
Utility
US 4,900,976 · App. 07/287,560
Material and assemblies for tensioned foil shadow masks
Inventors:
Michael Livshultz, Hua-Sou Tong
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Dec 20, 1988
Inventors
Michael Livshultz
Hua-Sou Tong
Assignee (at issue)
Zenith Electronics LLC
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.