Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Pencil CofiledCriticalMitsubishi Pencil Co
Priority to IT2217690UpriorityCriticalpatent/IT220914Z2/it
Publication of IT9022176V0publicationCriticalpatent/IT9022176V0/it
Publication of IT9022176U1publicationCriticalpatent/IT9022176U1/it
Application grantedgrantedCritical
Publication of IT220914Z2publicationCriticalpatent/IT220914Z2/it