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ES226573A1
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A continuous procedure for draining metals. (Machine-translation by Google Translate, not legally binding)
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ES225096A1
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A method of producing sulfur from sulfide of hydrogen and sulfide dioxide (Machine-translation by Google Translate, not legally binding)
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ES206986A3
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A procedure to load horizontal retortas of cinc (Machine-translation by Google Translate, not legally binding)
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ES143183A1
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An improved process for refining lead.
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ES122267A1
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An improved procedure to extract bismuth from lead.
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ES122165A1
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An improved process for the preparation of metal alloys.
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