Granted Patent
Utility
US 6,573,668 · App. 09/669,175
Color cathode ray tube having a convergence correction apparatus
Inventor:
Etsuji Tagami
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Sep 25, 2000
Inventor
Etsuji Tagami
Assignee (at issue)
Matsushita Electric Industry 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.