ES8440A2 -
Improvements in the procedure for the extraction of copper using concentration and therefore the suppression of any further refining.
- Google Patents
Improvements in the procedure for the extraction of copper using concentration and therefore the suppression of any further refining.
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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ledeboer P H
Original Assignee
Ledeboer P H
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ledeboer P HfiledCriticalLedeboer P H
Priority to ES8440ApriorityCriticalpatent/ES8440A2/en
Publication of ES8440A2publicationCriticalpatent/ES8440A2/en
ES8440A1888-06-301888-06-30
Improvements in the procedure for the extraction of copper using concentration and therefore the suppression of any further refining.
ExpiredES8440A2
(en)
Improvements introduced in the extraction or separation of metals from simple, compound or refractory minerals, gangas and metallic compounds of any kind.
An apparatus for holding, classifying and storing writings, letters, public deeds, etc., which can be assembled and placed by means of simple assemblies or unions.