Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Calastretti Louis
Castiglioni Charles
Original Assignee
Calastretti Louis
Castiglioni Charles
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Filing date
Publication date
Application filed by Calastretti Louis, Castiglioni CharlesfiledCriticalCalastretti Louis
Priority to ES34171ApriorityCriticalpatent/ES34171A1/es
Publication of ES34171A1publicationCriticalpatent/ES34171A1/es
ES34171A1904-06-091904-06-09Un procedimiento para reducir los sulfatos alcalinos y alcalino-térreos a sulfuros y los óxidos metálicos a metales.
ExpiredES34171A1
(es)
Un procedimiento para el aprovechamiento de escorias y minerales que contienen metales pesados con el objeto de utilizar dichos metales y el azufre de las matas producidas con el procedimiento.