Granted Patent
Utility
US 4,725,756 · App. 06/835,845
Tension mask color cathode ray tube front assembly having a stabilized mask support frame
Inventor:
Sam H. Kaplan
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Mar 3, 1986
Inventor
Sam H. Kaplan
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.