Description     Claims  

US20050124741A1   [0006] 
WO2012109318A   [0030] 
US20130283642A   [0030] 
US7641965B   [0032] 
US3404134A   [0034]  [0037] 
US5028674A   [0034] 
US6500888B   [0034] 
US6518365B   [0034]