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CA116800A
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Smelter for zinc ores
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GB190812403A
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Improved Apparatus for use in Smelting Zinc Ore, Galvanizers' Dross and the like.
|
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US914839A
|
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Apparatus for use in smelting zinc ore, galvanizer's dross, and the like.
|
|
GB190725099A
|
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Improved Apparatus for use in Smelting Zinc Ore, Galvanizers Dross, and the like.
|
|
US754141A
|
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Process of obtaining zinc.
|
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CA78341A
|
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Process of obtaining zinc
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US731184A
|
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Process of obtaining zinc.
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GB190212859A
|
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An Improved Process for Obtaining Zinc.
|
|
US701885A
|
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Retort.
|
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CA75635A
|
|
Zinc obtaining process
|
|
US708044A
|
|
Process of obtaining zinc.
|
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GB190022554A
|
|
Improved Process for Obtaining Zinc.
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