Granted Patent
Utility
US 5,656,884 · App. 08/300,334
Electron gun of a color picture tube for preventing astigmation
Inventor:
Soo Keun Lee
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Sep 2, 1994
Inventor
Soo Keun Lee
Assignee (at issue)
Goldstar Co., Ltd.
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.