Description     Claims     Drawing  

US3467248A   [0002] 
US4133429A   [0003] 
US5944177A   [0004] 
US6523689B   [0005] 
US8328016B   [0006] 
US8701889B   [0007] 
US8813959B   [0008] 
FR2439141   [0009]