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Individual
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Individual
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Priority to ES68308ApriorityCriticalpatent/ES68308A1/en
Publication of ES68308A1publicationCriticalpatent/ES68308A1/en
ES68308A1918-11-191918-11-19
Improved procedure for the treatment of concentrated, refined minerals, in the form of sludge, powder and the like.
ExpiredES68308A1
(en)