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DE102004003133A1   [0003] 
DE102012212303A1   [0004] 
DE3631001A1   [0005] 
FR2499608   [0006] 
CA2412660A1   [0007] 
DE19510670A1   [0007] 
EP2884012A1   [0008] 
US20040094219A1   [0008]