Description  Claims  Drawing  Cited references 

US4432307A   [0004] 
EP2401571A   [0004] 
DE102005010508   [0005] 
WO2010098666A   [0006]  [0006]  [0014] 
EP0789203A   [0007]  [0014] 
EP1826520A2   [0008] 
EP1707896A   [0013]  [0014]  [0014]