Description     Claims     Drawing  

US9421323B   [0002] 
US4689043A   [0003] 
US5090877A   [0003] 
US5364364A   [0003] 
US5445621A   [0003] 
US5505709A   [0003] 
US5779676A   [0003] 
US5830187A   [0003] 
US5954697A   [0003] 
US6423036B   [0003] 
US6599272B   [0003] 
US20070197968A   [0003] 
US20110066131A   [0003] 
WO2012032411A2   [0003]