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Individual
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Individual
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Priority to ES157438ApriorityCriticalpatent/ES157438A1/es
Publication of ES157438A1publicationCriticalpatent/ES157438A1/es
ES157438A1942-05-151942-05-15Unos perfeccionamientos en la construcción de forjado de los pisos, en la industria de la edificación
ExpiredES157438A1
(es)