Granted Patent
Utility
US 5,593,057 · App. 08/579,886
Identification marks of picture tube parts
Inventors:
Martin Kunzmann, Erwin Rommel
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Dec 28, 1995
Inventors
Martin Kunzmann
Erwin Rommel
Assignee (at issue)
Nokia Technology
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.