Granted Patent
Utility
US 5,864,203 · App. 08/698,767
Dynamic focusing electron gun
Inventor:
Hisakazu Yamane
Patented Case
View Patent ↗
Granted: Jan 26, 1999
Filed: Aug 16, 1996
Inventor
Hisakazu Yamane
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.