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DK2986C
(en)
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Apparatus at Furnaces for Smelting of fusible, zinc-rich Sulfur ores.
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DK3590C
(en)
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Procedure for Refining Iron.
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DK5266C
(en)
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Procedure for making Straatage refractory.
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ES26803A1
(en)
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A procedure for the manufacture of cement from blast furnace slag.
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DK5077C
(en)
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Apparatus for Emptying Gas Returns.
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DK2958C
(en)
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Furnace shaft for ever-burning ovens.
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DK6375C
(en)
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Procedure for Insertion by Ring Furnaces.
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DK1984C
(en)
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Devices for electric furnaces.
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CH23123A
(en)
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Crucible melting furnace for direct firing
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DK5163C
(en)
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Device for charging machines for gas retorts or similar.
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DK3530C
(en)
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Method with associated Apparatus for the manufacture of seams by metal sheet.
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DK6877C
(en)
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Apparatus by Coke Furnaces for Combustion of Renovation.
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ES29238A1
(en)
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An improved smelting furnace constituting an apparatus.
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DK5172C
(en)
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Procedure for Melting and Concentration of Unroasted Sulfide Ores.
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DK3647C
(en)
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Electric Melting Furnace for Glassmaking.
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DK4837C
(en)
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Apparatus for automatic closing of the tap for gas hobs.
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CA92033A
(en)
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Furnace for smelting ores
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DK8938C
(en)
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Apparatus by Furnaces for Heating Metals.
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DK4627C
(en)
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Devices for cement kilns.
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DK3327C
(en)
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Procedure with associated Apparatus for the Treatment of Impure and Melting Sulfur Ores
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CA78553A
(en)
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Furnace for smelting iron
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DK5054C
(en)
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Device for gas burners.
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ES27356A1
(en)
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A new or improved mechanical process for the manufacture of open hearth furnace steel.
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CA79491A
(en)
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Furnace for treating metals
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DK4875C
(en)
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Device by Control Furnaces.
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