Improvements in and relating to the manufacture of tracing paper,申请号GB19310033474-传众专利搜索

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发明名称	Improvements in and relating to the manufacture of tracing paper
摘要
申请公布号	GB379575(A)	申请公布日期	1932.09.01
申请号	GB19310033474	申请日期	1931.12.03
申请人	FREDERICK WILLIAM JOHN ALLOTT	发明人
分类号	D21H17/31;D21H17/62	主分类号	D21H17/31
代理机构		代理人
主权项
地址

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