Improvements in and relating to deep boring appliances,申请号GB19350007080-传众专利搜索

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发明名称	Improvements in and relating to deep boring appliances
摘要
申请公布号	GB446218(A)	申请公布日期	1936.04.27
申请号	GB19350007080	申请日期	1935.03.06
申请人	FRIEDRICH MUELLER	发明人
分类号	E21B19/08	主分类号	E21B19/08
代理机构		代理人
主权项
地址

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