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GB2068292A
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Method and an apparatus for the removal of excess layers from building elements made of cured lightweight concrete
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GB2068289A
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Method for the production of building elements of the lightweight concrete type
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ES351491A1
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Method for milling in wet of raw materials containing silicy acid. (Machine-translation by Google Translate, not legally binding)
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ES346684A1
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Device for plane cutting the surfaces of moulded blocks of lightweight concrete or similar material
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ES344434A1
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Improvements in the Production of Sand-Lime Bricks.
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ES340100A1
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Improvements in the Production of Lightweight Concrete
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