Granted Patent
Utility
US 4,884,005 · App. 07/208,870
Color picture tube with support means for suspending the mask
Inventors:
Walter Kornaker, Horst Ruopp
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Jun 15, 1988
Inventors
Walter Kornaker
Horst Ruopp
Assignee (at issue)
Nokia Graetz
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.