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High-frequency module
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Patent number 6,980,066
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Issue date Dec 27, 2005
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TDK Corporation
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Shinya Nakai
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Sintered ceramic body
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Patent number 4,939,106
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Issue date Jul 3, 1990
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TDK Corporation
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Toshinobu Miyakoshi
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Electroconductive composite ceramics
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Patent number 4,110,260
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Issue date Aug 29, 1978
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Tokyo Denki Kagaku Kogyo Kabushiki Kaisha (TDK Electronics Co., Ltd.)
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Hirotaka Yamamoto
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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