Description  Claims  Drawing  Cited references 

US1372216A   [0008]  [0043] 
US3880126A   [0008]  [0043] 
US20030015171A1   [0008]  [0043] 
US6880501B   [0008] 
US5546897A   [0008] 
US5623894A   [0010] 
US3959974A   [0011]  [0043] 
DE93010007   [0012] 
US20050016475A1   [0014]