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Priority claimed from JP1993071099Uexternal-prioritypatent/JP2590455Y2/ja
Priority claimed from JP7109893Uexternal-prioritypatent/JP2582709Y2/ja
Priority claimed from JP05260394Aexternal-prioritypatent/JP3197423B2/ja
Priority claimed from JP05260194Aexternal-prioritypatent/JP3197422B2/ja
Priority claimed from JP6106274Aexternal-prioritypatent/JPH07290874A/ja
Application filed by Mitsubishi Pencil CofiledCriticalMitsubishi Pencil Co
Application grantedgrantedCritical
Publication of TW289744BpublicationCriticalpatent/TW289744B/zh