Perfectionnements aux perforatrices,申请号FRD702191-传众专利搜索

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发明名称	Perfectionnements aux perforatrices
摘要
申请公布号	FR702191(A)	申请公布日期	1931.03.31
申请号	FRD702191	申请日期	1930.08.28
申请人	AUGER AND BORING MACHINERY COMPANY LTD	发明人
分类号	E21B7/00;E21B7/28	主分类号	E21B7/00
代理机构		代理人
主权项
地址

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