Granted Patent
Utility
US 4,136,300 · App. 05/729,592
Cathode ray tube having improved shadow mask
Inventor:
Albert M. Morrell
Patented Case
View Patent ↗
Granted: Jan 23, 1979
Filed: Oct 4, 1976
Inventor
Albert M. Morrell
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.