Granted Patent
Utility
US 4,764,705 · App. 07/065,354
Picture tube with deflection yoke
Inventor:
Heinz Lehner
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Jun 22, 1987
Inventor
Heinz Lehner
Assignee (at issue)
Standard Elektrik Lorenz AG
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.