Granted Patent
Utility
US 4,673,906 · App. 06/870,067
CRT deflection yoke with rigidifying means
Inventor:
William Petrow
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Jun 3, 1986
Inventor
William Petrow
Assignee (at issue)
Zenith Electronics LLC
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.