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Individual
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Individual
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Priority to ES56017ApriorityCriticalpatent/ES56017A1/en
Publication of ES56017A1publicationCriticalpatent/ES56017A1/en
ES56017A1913-07-121913-07-12
A process for treating minerals more especially applicable to roasting spent or burned pyrites and the like.
ExpiredES56017A1
(en)