Improvements in and relating to rulers, straight edges and the like,申请号GB19360030749-传众专利搜索

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发明名称	Improvements in and relating to rulers, straight edges and the like
摘要
申请公布号	GB486428(A)	申请公布日期	1938.06.03
申请号	GB19360030749	申请日期	1937.07.30
申请人	JOHN ALEXANDER BURNS	发明人
分类号	B43L7/00	主分类号	B43L7/00
代理机构		代理人
主权项
地址

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