Solicitud de George Spencer Neeley para inscribir el invento: Mejoras en los medios y el método, para impedir la formación de depósitos y de incrustaciones de calderas de vapor

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CR AN CR-AN-AH-MAG-PATEN-000329

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1926-06-10 - ? (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-000329 - Solicitud de George Spencer Neeley para inscribir el invento: Mejoras en los medios y el método, para impedir la formación de depósitos y de incrustaciones de calderas de vapor