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Individual
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Individual
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Priority to ES8062ApriorityCriticalpatent/ES8062A1/en
Publication of ES8062A1publicationCriticalpatent/ES8062A1/en
ES8062A1888-03-221888-03-22
Improvements in the methods of extracting gold and other precious minerals from the stones and minerals that contain it.
ExpiredES8062A1
(en)
Improvements in the means of effecting the separation of particles of different specific gravities, intended more especially for the separation of gold and other metals from crushed or divided minerals.