Granted Patent
Utility
US 4,355,260 · App. 06/167,990
Shadow mask suspension means for color cathode ray picture tubes
Inventor:
Lawrence W. Dougherty
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Jul 14, 1980
Inventor
Lawrence W. Dougherty
Assignee (at issue)
Zenith Radio Corporation
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.