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Hiroshi Takakura
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Mobara, JP
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last 30 patents
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Patent Grant
Cathode structure for a cathode ray tube
Patent number
5,793,157
Issue date
Aug 11, 1998
Hitachi, Ltd.
Hiroshi Takakura
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Heater for indirectly-heated cathode
Patent number
4,886,995
Issue date
Dec 12, 1989
Hitachi, Ltd.
Hiroshi Takakura
H01 - BASIC ELECTRIC ELEMENTS