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Air flow sensor
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Patent number 6,516,785
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Issue date Feb 11, 2003
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Hitachi, Ltd.
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Keiichi Nakada
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G01 - MEASURING TESTING
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Heat type air flow meter
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Patent number 5,654,506
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Issue date Aug 5, 1997
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Hitachi, Ltd.
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Hiroshi Yoneda
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G01 - MEASURING TESTING
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Heat wire airflow meter
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Patent number 4,909,079
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Issue date Mar 20, 1990
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Hitachi, Ltd.
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Yutaka Nishimura
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G01 - MEASURING TESTING
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