Description     Claims  

USRE28715E   [0003] 
US3383351A   [0003] 
USRE29118E   [0003] 
US3304273A   [0003] 
US4454255A   [0010] 
US4458038A   [0010] 
US4460715A   [0010]  [0010] 
US4242249A   [0011] 
US4550194A   [0012] 
US4652589A   [0012] 
US4997857A   [0012]  [0012] 
US5196476A   [0014]  [0043]  [0048] 
EP0786480A   [0015] 
US6013731A   [0016]  [0043] 
US5990185A   [0016]  [0043] 
US2012041144A1   [0017] 
US5814699A   [0018]  [0074] 
US4148840A   [0043] 
US5364906A   [0043] 
US6455603B   [0043] 
US4521546A   [0050] 
US3953393A   [0074] 
US4119586A   [0074] 
US4463107A   [0074] 
US5324774A   [0074] 
US6624209B   [0074] 
US7179882B   [0077]