Granted Patent
Utility
US 4,028,114 · App. 05/557,220
Photochemical system for coating the luminescent screen of a color television picture tube
Inventor:
Uwe Viohl
Patented Case
View Patent ↗
Granted: Jun 7, 1977
Filed: Mar 10, 1975
Inventor
Uwe Viohl
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.