Improvements in or relating to devices for drilling polygonal holes,申请号GB19480020386-传众专利搜索

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发明名称	Improvements in or relating to devices for drilling polygonal holes
摘要
申请公布号	GB653129(A)	申请公布日期	1951.05.09
申请号	GB19480020386	申请日期	1948.07.30
申请人	HENRY MAURICE MARTIN FISHER	发明人
分类号	B23Q5/04;B23Q27/00	主分类号	B23Q5/04
代理机构		代理人
主权项
地址

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