Advancing mine-roof support system,申请号GB19620004017-传众专利搜索

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发明名称	Advancing mine-roof support system
摘要
申请公布号	GB940448(A)	申请公布日期	1963.10.30
申请号	GB19620004017	申请日期	1962.02.02
申请人	WILLY EGGEMANN;ERBERHARD VON CAMPENHAUSEN	发明人
分类号	E21D23/08	主分类号	E21D23/08
代理机构		代理人
主权项
地址

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