B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
B42D15/00—Printed matter of special format or style not otherwise provided for
B42D15/02—Postcards; Greeting, menu, business or like cards; Letter cards or letter-sheets
B42D15/04—Foldable or multi-part cards or sheets
B42D15/08—Letter-cards or letter-sheets, i.e. cards or sheets each of which is to be folded with the message inside and to serve as its own envelope for mailing
Enveloppes reutilisables pour la reponse, a element de mise en place de la patte de fermeture pour la reexpedition, et procede de preparation de ces enveloppes pour l'expedition
Feuille de forme quadrilatere pliable en machine, preencollee, predecoupee, composant l'enveloppe et le courrier d'envoi ainsi que l'enveloppe et le courrier retour