Description  Claims  Drawing  Cited references 

US9120560B   [0008] 
US20130092799A   [0008] 
US10081436B   [0008] 
USD822579S   [0008] 
US5419514A   [0012] 
US2017305526A1   [0019] 
US3302907A   [0019] 
US2018105254A1   [0019] 
US2019127056A1   [0019] 
CN207943165U   [0019] 
EP1686057A2   [0019]