BINDER HAVING SHEATH WITH RIVET

PROBLEM TO BE SOLVED: To prevent rivets from being exposed to the external surface of a back face paper by a method wherein two or more holes are provided in the longitudinal direction on the back part of the sheath, and in the holes, the rivet made of a heat-weldable resin, comprising a head part w...

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Bibliographische Detailangaben
1. Verfasser: KANEDA KATSUMI
Format: Patent
Sprache:eng
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