Granted Patent
Utility
US 4,612,474 · App. 06/610,981
In-line type electron gun
Inventors:
Shigeya Ashizaki, Masao Natsuhara, Koichi Sugahara, Hideo Muranishi
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: May 9, 1984
Inventors
Shigeya Ashizaki
Masao Natsuhara
Koichi Sugahara
Hideo Muranishi
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.