Gravis Oil Announces Name Change to Petro River Oil and New Trading Symbol
March 20, 2013 05:30 ET
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Petro River Oil Corp.
HOUSTON, March 20, 2013 (GLOBE NEWSWIRE) -- Petro River Oil Corp., (the "Company" or "Petro River"), (OTCPK:GRAVF) announces FINRA has accepted the name change of Gravis Oil Corporation to "Petro...