Procédé et dispositif de broyage en deux étapes de matériaux friables Download PDF Info ... English (en) Other versions EP0447669B1 (fr Inventor Gotthardt Dipl.-Ing. Blasczyk Norbert Dipl.-Ing. Patzelt Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty ...