Description  Claims  Drawing  Cited references 

EP2000881A1   [0006] 
US20090109015A1   [0008] 
WO2012172679A   [0009] 
EP2315439A1   [0010] 
US8472216B   [0042] 
US2011101775A1   [0042] 
US2012163056A1   [0042] 
US8421277B   [0047] 
US8098242B   [0047]