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CA112043A
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Apparatus for manufacturing fuel gas from mineral carbonates
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CA110153A
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Process of extracting and manufacturing fuel gas from a mixture of mineral carbonates and organic substances
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US879321A
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Process of manufacturing gas.
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US879320A
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Apparatus for manufacturing fuel-gas.
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CA102928A
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Method of and apparatus for roasting ore and condensing the fumes and gases therefrom
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US824263A
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Ore-roasting furnace.
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US805880A
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Apparatus for dissolving and separating values contained in ores, &c.
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CA84541A
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Apparatus for dissolving, filtering, condensing, evaporating, and separating organic and inorganic substances
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US759192A
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Process of treating lead-bearing ores.
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US776424A
|
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Process of treating gold and silver ores.
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US748217A
|
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Apparatus for dissolving organic or inorganic substances.
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US759191A
|
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Process of treating copper ores.
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