Granted Patent
Utility
US 4,650,435 · App. 06/217,797
Method of making a focusing color-selection structure for a CRT
Inventor:
Donald J. Tamutus
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Dec 18, 1980
Inventor
Donald J. Tamutus
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.