Description  Claims  Drawing  Cited references 

US8874182B   [0002] 
US8215770B   [0002] 
WO2015073758A   [0004] 
WO2016057867A   [0005] 
US20140055741A   [0006] 
US20150145155A   [0006] 
US9176332B   [0006] 
US20150234204A   [0006] 
US20150036100A   [0006] 
US4099859A   [0006] 
WO2014194431A   [0006] 
US8865789B   [0014]  [0027] 
US8348424B   [0022] 
US20080208335A   [0022]