Description     Claims     Drawing  

US5201916A   [0002] 
US5366523A   [0002] 
US5984988A   [0002] 
US3377660A   [0003] 
US3079242A   [0004] 
US4744802A   [0005] 
US4848041A   [0005] 
US2015089881A1   [0005]