| 摘要 |
Loose-leaf binder of the type comprising a curved-pin mechanism and sides formed by two covers hinged together. The spine (11) of the binder is a middle part (12) made of rigid material and provided with flexible edges (13) which extend along each side of the binder virtually as far as the hinge (3) between the covers (1,2) forming the two sides, the extremity of these edges forming a line of attachment of the spine to the sides of the binder. <IMAGE>
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