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DE1045630B
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Method for prestressing girders, in particular reinforced concrete girders
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Swivel joint for vault and frame
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Process for the production of concrete blocks from heavy concrete as well as concrete blocks produced afterwards
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Process for the production of a concrete with magnesia cement as a binder
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Process for the production of magnesia clay
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Process for the production of magnesia cement or concrete
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Swivel joint for vault and frame
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Process for the production of magnesia clay
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Gravity dam with a device for relocating and reducing stresses
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Aqueous lock
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Aqueous lock
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Aqueous lock
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Wooden ceiling with iron-reinforced ribs
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