Granted Patent
Utility
US 4,644,222 · App. 06/716,449
Color picture tube with mounting structure for a shadow mask
Inventor:
Otto Brunn
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Mar 27, 1985
Inventor
Otto Brunn
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.