Granted Patent
Utility
US 6,046,540 · App. 09/001,007
Color picture tube
Inventor:
Koji Nakamura
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Dec 30, 1997
Inventor
Koji Nakamura
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.