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Class Information
Number: 402/25
Name: Binder device releasably engaging aperture or notch of sheet > Sheet retainer with means to force sheet thereon
Description: Device in accordance with part (1) or part (2) thereof including means which causes motion of a perforated or unperforated sheet* relative to the sheet retainer* in such a direction that the sheet retainer passes through the thickness dimension of the sheet.

Patents under this class:

Patent Number Title Of Patent Date Issued
6955493 Flexibind books Oct. 18, 2005
5169255 Method and apparatus for removing selected papers from file folders Dec. 8, 1992
5125758 Piercing clamp Jun. 30, 1992
4964746 Elastic clip with positioning means for positioning of perforations Oct. 23, 1990
4113394 Removable binding device Sep. 12, 1978

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