Improvements connected with protractor heads of drawing machines,申请号GB19490031625-传众专利搜索

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发明名称	Improvements connected with protractor heads of drawing machines
摘要
申请公布号	GB663024(A)	申请公布日期	1951.12.12
申请号	GB19490031625	申请日期	1949.12.09
申请人	JOHN WRIGHT SMITH;VIKTOR GRAF	发明人
分类号	B43L13/08	主分类号	B43L13/08
代理机构		代理人
主权项
地址

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