Description  Claims  Drawing  Cited references 

US6235195B   [0003] 
US7001450B2   [0005] 
US6746518B2   [0005] 
US6547857B2   [0005] 
US7008467B2   [0011] 
US6966940B2   [0011] 
US3025963A   [0044] 
US979390   [0044] 
US10979453B   [0044]