Description  Claims  Drawing  Cited references 

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US2008041995A   [0002] 
US7866418B   [0031] 
US7998573B   [0031] 
US8034136B   [0031] 
US8236074B   [0031] 
US275372   [0033] 
US027954   [0034] 
US100388   [0035]