Perforatrice,申请号FRD1066880-传众专利搜索

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发明名称	Perforatrice
摘要
申请公布号	FR1066880(A)	申请公布日期	1954.06.10
申请号	FRD1066880	申请日期	1952.06.07
申请人	NATIONAL COAL BOARD	发明人
分类号	E21B3/03	主分类号	E21B3/03
代理机构		代理人
主权项
地址

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