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Planar array antenna
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Patent number 4,893,129
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Issue date Jan 9, 1990
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Nippon Soken, Inc.
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Masao Kodera
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H01 - BASIC ELECTRIC ELEMENTS
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Ultrasonic transducer
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Patent number 4,636,997
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Issue date Jan 13, 1987
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Nippon Soken, Inc.
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Keiichiro Toyama
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B60 - VEHICLES IN GENERAL
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Diesel smoke meter
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Patent number 4,580,441
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Issue date Apr 8, 1986
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Nippondenso Co., Ltd.
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Takashi Sakurai
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Ultrasonic wave conversion apparatus
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Patent number 4,486,868
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Issue date Dec 4, 1984
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Nippon Soken, Inc.
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Masao Kodera
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Ultrasonic transducer
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Patent number 4,485,322
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Issue date Nov 27, 1984
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Nippon Soken, Inc.
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Eturo Yasuda
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Ultrasonic transducer
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Patent number 4,433,398
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Issue date Feb 21, 1984
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Nippon Soken, Inc.
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Masao Kodera
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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