Granted Patent
Utility
US 4,336,492 · App. 06/146,970
Apparatus for testing an hermetic seal in a glass cathode ray tube
Inventors:
Alton J. Torre, Victor R. Schuster
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: May 5, 1980
Inventors
Alton J. Torre
Victor R. Schuster
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.