Yielding supporting structure for mines,申请号GB19530029219-传众专利搜索

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发明名称	Yielding supporting structure for mines
摘要
申请公布号	GB758257(A)	申请公布日期	1956.10.03
申请号	GB19530029219	申请日期	1953.10.22
申请人	AKTIENGESELLSCHAFT FUR UNTERNEHMUNGEN DER EISEN- UND STAHLINDUSTRIE	发明人
分类号	E21D11/22	主分类号	E21D11/22
代理机构		代理人
主权项
地址

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