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Gas sensor
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Patent number 6,303,011
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Issue date Oct 16, 2001
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Kabushiki Kaisha Riken
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Yunzhi Gao
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G01 - MEASURING TESTING
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NOx sensor
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Patent number 6,126,902
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Issue date Oct 3, 2000
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Kabushiki Kaisha Riken
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Akira Kunimoto
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G01 - MEASURING TESTING
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NO.sub.x sensor
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Patent number 6,019,881
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Issue date Feb 1, 2000
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Kabushiki Kaisha Riken
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Hideyuki Kurosawa
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G01 - MEASURING TESTING
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Nitrogen oxide detector
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Patent number 5,861,092
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Issue date Jan 19, 1999
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Riken Corporation
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Fumio Kiyota
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G01 - MEASURING TESTING
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