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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Doetsch Mannheim Henry
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Doetsch Mannheim Henry
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Application filed by Doetsch Mannheim HenryfiledCriticalDoetsch Mannheim Henry
Priority to ES1208ApriorityCriticalpatent/ES1208A3/es
Publication of ES1208A3publicationCriticalpatent/ES1208A3/es
ES1208A1880-10-211880-10-21Un procedimiento para extraer el cobre y demás metales contenidos en los minerales y piritas que los encierran.
ExpiredES1208A3
(es)
To legalize the action of the several boards of county commissioners in the state in making certain appropriations in aid of" the National Mining and Industrial Exposition," held at Denver, Colorado, and to enable the counties to make additional appropriations.
Mejoras en los aparatos para extraer el oro y la plata de los minerales que los contienen, por medio de la acción combinada de la electricidad y el mercurio.
Modificaciones introducidas en el capacho común de esparto para extraer el aceite de su fruto después de triturado entre en los molinos y que denomina "Capacho blindado".
Perfeccionamientos introducidos en el procedimiento para tratar minerales y materias que contienen azufre, con el objeto de la extracción de metales y otros constituyentes.