Mechanical pencil,申请号US00/080141-传众专利搜索

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发明名称	Mechanical pencil
摘要
申请公布号	USD421770(S1)	申请公布日期	2000.03.21
申请号	US00/080141	申请日期	1997.12.01
申请人		发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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