B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
Support de sertissage pour pierre précieuse, fine, ornementale, plus spécialement diamant, châton comportant une telle pierre et un tel support de sertissage; procédé et outil de façonnage d'un tel support;