Granted Patent
Utility
US 4,952,188 · App. 07/383,784
Method for making mask support structure for a tension mask color cathode ray tube
Inventors:
Siegfried M. Greiner, Raymond G. Capek
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Jul 21, 1989
Inventors
Siegfried M. Greiner
Raymond G. Capek
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.