| http://www.w3.org/ns/prov#value | - 35054120 Mar 199826 Feb 2002Ensci Inc.Battery element containing efficiency improving additivesUS64888597 May 20013 Dic 2002Arch Development CorpSeparation and removal of iron iii ions from sulfuric acid containing metal ii ions, especially cobalt, copper and manganese; optional subsequent reduction to iron ii ionsUS650652130 Dic 200014 Ene 2003Ensci IncBattery separator containing efficiency impr
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