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CA178019A
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Orange mineral
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US1203911A
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Method of manufacturing lead carbonates.
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US1187949A
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Method of manufacturing lead sulfate.
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US1187950A
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Manufacture of basic lead sulfate.
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US1181172A
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Method of manufacturing basic lead chromate.
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US1187933A
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Orange mineral and method of manufacturing same.
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US1172741A
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Manufacture of lead arsenate.
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US1033405A
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Production of lead compounds.
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US975955A
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Method of freeing litharge from metallic lead mixed with it.
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US975768A
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Apparatus for manufacturing sublimed white lead.
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US975867A
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Process of manufacturing sublimed white lead.
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US1008412A
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Process of making lead salts.
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US920337A
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Method of making zinc oxid.
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US920334A
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Metallurgical furnace.
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US920333A
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Furnace.
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US920335A
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Method of manufacturing litharge.
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US920336A
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Method of manufacturing zinc oxid.
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CA125400A
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Method of making zinc oxide
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CA125401A
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Method of manufacturing zinc oxide
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CA125399A
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White lead manufacture
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