Granted Patent
Utility
US 4,675,729 · App. 06/874,050
Method of detecting blemishes in the phosphor screen on a kinescope faceplate
Inventor:
Peter D. Southgate
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Jun 13, 1986
Inventor
Peter D. Southgate
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.