FR2608074B1 FR878717155A FR8717155A FR2608074B1 FR 2608074 B1 FR2608074 B1 FR 2608074B1 FR 878717155 A FR878717155 A FR 878717155A FR 8717155 A FR8717155 A FR 8717155A FR 2608074 B1 FR2608074 B1 FR 2608074B1 Authority FR France Prior art keywords vibrating screen vibrating screen Prior art date …