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Delmas Azema ?
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Delmas Azema ?
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Priority to ES4567ApriorityCriticalpatent/ES4567A1/es
Publication of ES4567A1publicationCriticalpatent/ES4567A1/es
Un procedimiento para quitar al papel ordinario las propiedades de inflamarse al contacto de la llama conservándole todas las demás que le son propias dotándole por consiguiente de mejores condiciones para los diversos usos de la vida.