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3582265
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Issue date Jun 1, 1971
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C01 - INORGANIC CHEMISTRY
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1878510
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Patent number 1,878,510
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Issue date Sep 20, 1932
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C01 - INORGANIC CHEMISTRY
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Patent number 1,732,230
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Issue date Oct 22, 1929
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C01 - INORGANIC CHEMISTRY
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1400167
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Patent number 1,400,167
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Issue date Dec 13, 1921
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C01 - INORGANIC CHEMISTRY