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Priority to ES58731ApriorityCriticalpatent/ES58731A1/es
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ES58731A1914-07-161914-07-16Un procedimiento perfeccionado y su correspondiente aparato para el tratamiento del cianamido de calcio.
ExpiredES58731A1
(es)
Un procedimiento y su aparato correspondiente para el tratamiento de las materias fecales y para extraer en frío el amoniaco de las soluciones amoniacales.