Granted Patent
Utility
US 5,831,399 · App. 08/772,387
Color picture tube apparatus
Inventors:
Kazunori Ohta, Masahide Yamauchi, Yasuyuki Ueda, Masahiko Sukeno
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Dec 23, 1996
Inventors
Kazunori Ohta
Masahide Yamauchi
Yasuyuki Ueda
Masahiko Sukeno
Assignee (at issue)
Matsushita Electronics 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.