Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B42
BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
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B42F
SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING
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17/00
Card-filing arrangements, e.g. card indexes or catalogues or filing cabinets
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B42F17/02
in which the cards are stored substantially at right angles to the bottom of their containers
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B42F17/08
Construction of the containers, e.g. trays or drawers
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