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Bennes Marrel SA
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Bennes Marrel SA
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Priority to ES358456ApriorityCriticalpatent/ES358456A3/es
Publication of ES358456A3publicationCriticalpatent/ES358456A3/es
Perfeccionamientos introducidos en entramados desplazables de apuntalado para la excavacion yno el encofrado de la en- tibacion definitiva de galerias, tuneles, pozos u otras construcciones alargadas similares.