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Impedance-to-voltage converter
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Patent number 6,335,642
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Issue date Jan 1, 2002
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Sumitomo Metal Industries Limited
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Tatsuo Hiroshima
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G01 - MEASURING TESTING
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Steel surface inspection apparatus
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Patent number 4,336,923
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Issue date Jun 29, 1982
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Sumitomo Metal Industries, Ltd.
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Toshio Shiraiwa
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Hot steel cutting apparatus
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Patent number 4,318,439
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Issue date Mar 9, 1982
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Sumitomo Metal Industries, Ltd.
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Tatsuo Hiroshima
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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