B42F17/00—Card-filing arrangements, e.g. card indexes or catalogues or filing cabinets
B42F17/18—Card-filing arrangements, e.g. card indexes or catalogues or filing cabinets in which the cards are stored in a flat position
B42F17/20—Card-filing arrangements, e.g. card indexes or catalogues or filing cabinets in which the cards are stored in a flat position and are pivotable relative to the bottom of their containers
B—PERFORMING OPERATIONS; TRANSPORTING
B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER