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Individual
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Priority to ES0158765ApriorityCriticalpatent/ES158765A2/es
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Mejoras introducidas en el objeto de la patente principal nº 158.435 caracterizadas porque las distancias entre hierros de armados se establecen a elección en todo caso.
ES0158765A1942-09-291942-09-29Mejoras introducidas en el objeto de la patente principal
ExpiredES158765A2
(es)