B42F13/00—Filing appliances with means for engaging perforations or slots
B42F13/16—Filing appliances with means for engaging perforations or slots with claws or rings
B42F13/20—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges
B42F13/28—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges in two staggered sections
Dispositif peu encombrant pour presenter et maintenir des livres, classeurs ou objets de format egal ou inferieur a celui d'un livre scolaire, au dessus ou au bord de tables, tablettes ou bureaux