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1997-04-02
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1988-08-31
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1987-10-09
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1991-01-30
Method and apparatus for detecting metal objects
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1991-05-29
Process for extracting metal values from ores
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1988-07-27
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1990-09-05
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1989-04-28
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1990-03-21
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1987-12-23
Leaching process
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1994-11-01
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1991-01-09
A method of electrolytically treating metals
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1991-01-30
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1989-04-26
Process for removing metal complexes from waste solutions
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1991-06-19
Process and apparatus for metal casting
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1988-12-07
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1991-09-25
Apparatus and method for discharging molten metal
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1988-10-13
Method and device for washing anode wastes from metal electrorefining process
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1990-09-26
Method and apparatus for refining molten metal
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1986-03-26
Smelting process for recovering metals,and apparatus for carrying out that process
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1985-09-25
Apparatus and method for removing dissolved metals from solutions containing same
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1982-10-27
Solution and method for removing alloy
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1986-10-01
Metal stripping system and an operation process therefor
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Apparatus for recycling metal from electrolytic liquid.