Filing appliances with means for engaging perforations or slots (B42F17/00 takes precedence; indexing features B42F21/00)

Child Classifications

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• B42F 13/0006
• B42F 13/0093
• B42F 13/02 with flexible or resilient means
• B42F 13/12 with pillars, posts, rods, or tubes (B42F13/30 takes precedence)
• B42F 13/16 with claws or rings (B42F13/30 takes precedence; for permanent binding B42B5/08)
• B42F 13/30 having a set of rods within a set of tubes for a substantial distance when closed
• B42F 13/36 Locking followers; Pressure bars
• B42F 13/38 Expansible cover splines
• B42F 13/40 combined or formed with other articles, e.g. punches, stands
• B42F 13/42 Content transfer devices; Converting into permanent binders