Improvements in or relating to document covers,申请号GB19530017256-传众专利搜索

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发明名称	Improvements in or relating to document covers
摘要
申请公布号	GB724494(A)	申请公布日期	1955.02.23
申请号	GB19530017256	申请日期	1953.06.22
申请人	WALTER LENNARTZ	发明人
分类号	B42F7/02	主分类号	B42F7/02
代理机构		代理人
主权项
地址

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