Description  Claims  Drawing  Cited references 

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US5500065A   [0007]  [0018] 
US5562787A   [0007]  [0018] 
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US5573611A   [0007]  [0018] 
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US6030478A   [0033]  [0048] 
WO9929524A   [0041] 
US6025777A   [0122]