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ES126456A1
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An automatic regulating device for the introduction of nitric acid or ammonia in the installations of sulfuric acid chambers.
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ES120457A1
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Improvements in the manufacture of sulfuric acid.
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GB120045A
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Process for the Synthetic Production of Hydrogenperoxide and Apparatus therefor.
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GB191213175A
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Improvements in or relating to Apparatus used in the Manufacture of Sulphuric Acid.
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US981103A
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Apparatus for making sulfuric acid.
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US981102A
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Electrolytic device for generating pure oxygen and hydrogen.
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GB190911128A
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Improvements in or relating to Apparatus for the Manufacture of Sulphuric Acid.
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US653933A
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Electrode for electrolyzing apparatus.
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