Granted Patent
Utility
US 4,437,036 · App. 06/314,383
Cathode-ray tube having a temperature compensated mask-frame assembly
Inventor:
Frank R. Ragland, Jr.
Patented Case
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Granted: Mar 13, 1984
Filed: Oct 23, 1981
Inventor
Frank R. Ragland, Jr.
Assignee (at issue)
RCA 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.