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3903245
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Patent number 3,903,245
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Issue date Sep 2, 1975
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2735760
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Patent number 2,735,760
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Issue date Feb 21, 1956
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2711958
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Patent number 2,711,958
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Issue date Jun 28, 1955
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2711956
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Patent number 2,711,956
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Issue date Jun 28, 1955
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C01 - INORGANIC CHEMISTRY
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2711957
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Patent number 2,711,957
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Issue date Jun 28, 1955
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C01 - INORGANIC CHEMISTRY