Granted Patent
Utility
US 4,701,677 · App. 06/760,247
Color cathode ray tube apparatus
Inventors:
Shigeya Ashizaki, Koichi Sugahara, Hideo Muranishi, Masao Natsuhara
Patented Case
View Patent ↗
Granted: Oct 20, 1987
Filed: Jul 29, 1985
Inventors
Shigeya Ashizaki
Koichi Sugahara
Hideo Muranishi
Masao Natsuhara
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.