Granted Patent
Utility
US 4,963,008 · App. 07/387,803
Correction lens system used in production of fluorescent screen of color picture tube and method of manufacturing correction lens system
Inventor:
Takeo Fujimura
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: Aug 1, 1989
Inventor
Takeo Fujimura
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.