Granted Patent
Utility
US 4,789,807 · App. 07/091,168
Electron gun assembly having a reinforced heater tab
Inventor:
John R. Hale
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Aug 31, 1987
Inventor
John R. Hale
Assignee (at issue)
RCA Licensing 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.