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Akikazu Harada
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Mobara, JP
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last 30 patents
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Patent Grant
Magnetron with resonant choke structure for supressing unwanted har...
Patent number
4,833,367
Issue date
May 23, 1989
Hitachi, Ltd.
Akikazu Harada
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Waveguide filter used in a microwave oven
Patent number
4,749,973
Issue date
Jun 7, 1988
Hitachi Heating Appliances Co., Ltd.
Kazuo Kaneko
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Magnetron
Patent number
4,742,272
Issue date
May 3, 1988
Hitachi, Ltd.
Jiro Kusano
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Apparatus for suppressing radiation leakage in a magnetron circuit
Patent number
4,156,829
Issue date
May 29, 1979
Hitachi, Ltd.
Akikazu Harada
H01 - BASIC ELECTRIC ELEMENTS