Abstract     Description     Claims     Drawing  

WO61352195A   [0001] 
US4568329A   [0009] 
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US5221256A   [0009] 
US5364344A   [0009] 
US5451206A   [0009] 
US6814718B   [0009] 
US7011645B   [0009] 
US7077829B   [0051] 
US20080312578A   [0056]  [0058]