Description  Claims  Cited references 

US7776807B   [0007] 
US20080108541A   [0007] 
WO2013160023A1A   [0007] 
US7981855B1   [0007] 
EP0726356A1   [0007] 
WO2014017913A1   [0007] 
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WO2009101545A   [0008] 
WO2012065924A   [0008]  [0008] 
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WO2012052306A   [0009]  [0009]  [0009] 
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US4663071A   [0124] 
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US5616781A   [0126] 
US6056949A   [0139] 
US6458754B   [0151] 
US20110224127A1   [0151] 
US3308067A   [0155] 
EP66915A   [0156] 
EP193360A   [0156]  [0156]