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Sunstone Capital - Patents

Title Application Date Patent Date Status
(Patent / Application)
Force balanced rotating pressure control device Apr 28, 2010 Oct 04, 2011 Patent
Producing nitrogen to use in under balanced drilling, secondary recovery production operations and pipeline maintenance Nov 10, 2008 Jul 19, 2011 Patent
Flapper valve and actuator Aug 14, 2006 May 26, 2009 Patent