Improvements in or relating to supports for use in mining,申请号GB19540016114-传众专利搜索

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发明名称	Improvements in or relating to supports for use in mining
摘要
申请公布号	GB759647(A)	申请公布日期	1956.10.24
申请号	GB19540016114	申请日期	1954.05.31
申请人	GERHARD WERNER;KARL IDEL	发明人
分类号	E21D23/00	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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