Improved appliance for use in tapping holes,申请号GB19300038149-传众专利搜索

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发明名称	Improved appliance for use in tapping holes
摘要
申请公布号	GB362178(A)	申请公布日期	1931.12.03
申请号	GB19300038149	申请日期	1930.12.18
申请人	ERNEST COOK	发明人
分类号	B23G1/20	主分类号	B23G1/20
代理机构		代理人
主权项
地址

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