Granted Patent
Utility
US 5,122,707 · App. 07/725,761
Cathode in a cathode ray tube
Inventors:
Hisao Nakanishi, Kinjiro Sano, Toyokazu Kamata, Keiji Watanabe, Masato Saito, Ryo Suzuki, Keiji Fukuyama, Masako Ishida
Patented Case
View Patent ↗
Granted: Jun 16, 1992
Filed: Jun 28, 1991
Inventors
Hisao Nakanishi
Kinjiro Sano
Toyokazu Kamata
Keiji Watanabe
Masato Saito
Ryo Suzuki
Keiji Fukuyama
Masako Ishida
Assignee (at issue)
MITSUBISHI ELECTRIC 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.