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Paper, Printing & Office Supplies
Class Information
Number:
402/50
Name:
Binder device releasably engaging aperture or notch of sheet
>
Opposed sheet retainers involving relative rectilinear travel
>
Telescopic retainers with means to telescopically drive and/or secure
> Remote from retainer
Description:
Device wherein the means to telescopically drive or secure the first sheet retainer relative to the second sheet retainer is disposed on the device in a position spaced from the retainers.
Sub-classes under this class:
Class Number
Class Name
Patents
402/51
Screw threaded means
5
Patents under this class:
Patent Number
Title Of Patent
Date Issued
4307972
Looseleaf books with plastic posts
Dec. 29, 1981
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