Hydraulic advanceable roof support assembly,申请号GB19660006098-传众专利搜索

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发明名称	Hydraulic advanceable roof support assembly
摘要
申请公布号	GB1132252(A)	申请公布日期	1968.10.30
申请号	GB19660006098	申请日期	1966.02.11
申请人	GEWERKSCHAFT EISENHUTTE WESTFALIA	发明人
分类号	E21D23/00;E21D23/04	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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