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Application filed by Nippon Tenshashi KkfiledCriticalNippon Tenshashi Kk
Priority to CH1678572ApriorityCriticalpatent/CH564408A5/fr
Publication of CH564408A5publicationCriticalpatent/CH564408A5/fr
Ensemble composé d'un instrument d'écriture plat et d'un élément de maintien de l'instrument d'écriture a l'intérieur d'un cahier ou carnet