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Priority to JP2633587UpriorityCriticalpatent/JPH048993Y2/ja
Publication of JPS63136732UpublicationCriticalpatent/JPS63136732U/ja
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Publication of JPH048993Y2publicationCriticalpatent/JPH048993Y2/ja
Procede de formation d'un triedre a partir d'un element plan formant feuille rigide, en carton, a autoblocage par la presence d'un volet rabattable dans une ouverture, un tel element permettant la formation d'un tel triedre et son utilisation comme triedre de calage ou comme fond, couvercle ou plateau par formation d'un triedre a chaque angle d'une plaque constituant l'element plan