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The present invention forms a dividing line in a selected shape on a front plate connected to a folding line at a folded portion of a document storage file in which a rectangular quadrangular sheet of paper or a synthetic resin film having a certain standard is folded in half and the front and rear...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: LEE, SEOK CHEON
Format: Patent
Sprache:eng ; kor
Schlagworte:
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