Converter for mechanical pencils,申请号US19550532337-传众专利搜索

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发明名称	Converter for mechanical pencils
摘要
申请公布号	US2753843(A)	申请公布日期	1956.07.10
申请号	US19550532337	申请日期	1955.09.02
申请人	LANE FRANK L	发明人	LANE FRANK L.
分类号	B43K7/00;B43K21/08;B43K23/12	主分类号	B43K7/00
代理机构		代理人
主权项
地址

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