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GB190607297A
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Process for the Manufacture of Methyl-alcohol from Methane.
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GB190604409A
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Improvements in the Synthetic Production of Cyanide of Ammonium.
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GB190603446A
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Improvements in or relating to the Manufacture of Paint Material.
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CA102235A
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Method of extracting hydrated oxides from ores
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US836587A
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Wet method of extracting copper, zinc, &c., from their ores.
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GB189908060A
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Improvements in Electrical Furnaces.
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|
US679973A
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Electric furnace.
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GB189906582A
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Electrical Furnace with Peripheral Heating by Means of Electrical Resistances.
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