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1986-02-05
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1989-04-26
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1992-06-10
Process for recovery of metals from metal/plastics waste
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1990-03-21
Scrap removal apparatus and method
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1984-12-31
Method and apparatus for the reclamation of waste oil
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1989-04-17
Method of separating and reclaiming metals and metaloides from sulfide sludges
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1990-05-30
Melting retort and method of melting materials
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1989-09-13
Method of separating oleaginous matter into components having various melting points
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1986-10-29
Method and apparatus for separating into two phases sludge contains granules of various size
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1988-04-14
Method for precipitating and separating metals
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1988-06-15
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1984-09-14
Method for biological extraction of non- ferrous metals
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1994-09-15
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1986-10-01
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1993-04-07
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1989-01-12
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1988-08-15
Method for treatment of wastes from hard alloys
PL237846A1
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1984-02-13
Method of integral concentration of ores containing sulfides of non-ferrous metals
PL252949A1
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1986-11-04
Method of recovering fats from waste waters and apparatus therefor
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1982-11-09
Method of separating and extracting molten metal and scum
DE3276577D1
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1987-07-23
Method for plastic deformation of non-ferrous metals
CS275207B2
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1992-02-19
Method of chlorine removal from zinc wastes
CS275334B2
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1992-02-19
Method of chlorine removal from zinc wastes
PL275379A1
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1990-04-17
Method of removing hydrogen sulfide from waste gases
PL256718A1
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1987-06-29
Method of recovering sulfur and iron from pyritic coal wastes