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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	U.S. Pat. No. 4,384,939 discloses a method and apparatus for the removal of precious metals, such as gold, contained in a liquid in low concentration.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com