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Air flow meter
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Patent number 4,562,731
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Issue date Jan 7, 1986
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Hitachi, Ltd.
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Yutaka Nishimura
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G01 - MEASURING TESTING
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Engine control apparatus
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Patent number 4,552,116
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Issue date Nov 12, 1985
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Hitachi, Ltd.
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Hiroshi Kuroiwa
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Air flow meter
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Patent number 4,373,387
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Issue date Feb 15, 1983
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Hitachi, Ltd.
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Yutaka Nishimura
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G01 - MEASURING TESTING