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Application filed by Mitsubishi Pencil CofiledCriticalMitsubishi Pencil Co
Priority to ITMI920027ApriorityCriticalpatent/IT1258752B/en
Publication of ITMI920027A0publicationCriticalpatent/ITMI920027A0/en
Publication of ITMI920027A1publicationCriticalpatent/ITMI920027A1/en
Application grantedgrantedCritical
Publication of IT1258752BpublicationCriticalpatent/IT1258752B/en