"Solicitud de Rafael M. González R. para inscribir el invento: Nueva clase de concreto compuesto de cemento romano y mineral de manganeso, denominado ""Concreto Tellez"""

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CR AN CR-AN-AH-MAG-PATEN-000304

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1925-01-31 - ? (Creation)

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Ministerio de Agricultura y Ganadería

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Archivo Nacional

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Item CR-AN-AH-MAG-PATEN-000304 - "Solicitud de Rafael M. González R. para inscribir el invento: Nueva clase de concreto compuesto de cemento romano y mineral de manganeso, denominado ""Concreto Tellez"""