Back plate and file cover for ring binder

Binder device releasably engaging aperture or notch of sheet – Resilient sheet retainer requiring deflection for sheet removal – Releasably attached to keeper

Reexamination Certificate

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Details

C402S070000, C402S058000, C402S022000, C281S019200

Reexamination Certificate

active

07665924

ABSTRACT:
On the one surface of a back plate suited to a length-and-width size of a ring binder, hooks serving as an engaging means are formed. The back plate is fixed to the spine surface of the file cover. When the ring binder is pressed against the back plate, the hooks are engaged with the ring binder so that the file cover is mounted on a booklet bound with the ring binder.

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