Granted Patent
Utility
US 4,983,879 · App. 07/284,326
Shadow mask type color cathode ray tube with shadow mask effective to minimize the appearance of Moire patterns
Inventor:
Takeo Kawaguchi
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Dec 14, 1988
Inventor
Takeo Kawaguchi
Assignee (at issue)
MITSUBISHI 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.