Description  Claims  Drawing  Cited references 

US3354881A   [0002] 
US4416663A   [0002] 
US4666436A   [0002] 
WO2014064100A   [0003] 
WO2014029018A   [0004] 
WO2015062845A   [0004]  [0034] 
EP2016057233W   [0057]