Granted Patent
Utility
US 4,325,613 · App. 06/195,589
Arrangement for making color-picture tubes
Inventors:
Robert Friedrich, Peter Schmidt
Patented Case
View Patent ↗
Granted: Apr 20, 1982
Filed: Oct 9, 1980
Inventors
Robert Friedrich
Peter Schmidt
Assignee (at issue)
International Standard Electric 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.