Granted Patent
Utility
US 4,464,601 · App. 06/407,276
CRT with quadrupolar-focusing color-selection structure
Inventor:
Stanley Bloom
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: Aug 11, 1982
Inventor
Stanley Bloom
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.