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
Systeme permettant de verifier la sequence, la concordance et la quantite de documents assembles, ainsi que documents et emballages adaptes a ce systeme.