Granted Patent
Utility
US 4,143,345 · App. 05/913,239
Deflection yoke with permanent magnet raster correction
Inventor:
William H. Barkow
Patented Case
View Patent ↗
Granted: Mar 6, 1979
Filed: Jun 6, 1978
Inventor
William H. Barkow
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.