Description     Claims     Drawing  

US4651804A   [0003]  [0009]  [0011] 
EP0150922A   [0009] 
US5212343A   [0010]  [0010]  [0012]  [0014] 
DE5212343   [0010] 
US5404813A   [0010] 
US4188884A   [0011] 
US4593745A   [0013] 
US4610295A   [0013] 
US4709740A   [0013] 
US4724887A   [0013] 
US4237961A   [0014] 
EP0183563A   [0014] 
US6279645B   [0029] 
US7296613B   [0029] 

Metal Progress   [0005] 
Metal Progress   [0008]