Paper knife adapted to be used as holding device for books,申请号GB19290034409-传众专利搜索

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发明名称	Paper knife adapted to be used as holding device for books
摘要
申请公布号	GB337216(A)	申请公布日期	1930.10.30
申请号	GB19290034409	申请日期	1929.11.11
申请人	JOHAN HEIBERG	发明人
分类号	B42D9/00	主分类号	B42D9/00
代理机构		代理人
主权项
地址

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