Description  Claims  Drawing  Cited references 

US5605999A   [0026] 
US5399770A   [0031] 
US4505793A   [0035] 
US4258123A   [0035] 
EP0369645A1   [0036] 
EP0563925A1   [0037] 
US5395862A   [0038] 
US5451343A   [0038] 
US5545676A   [0038]