Improvements in or relating to mineral-mining apparatus,申请号GB19540015239-传众专利搜索

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发明名称	Improvements in or relating to mineral-mining apparatus
摘要
申请公布号	GB763114(A)	申请公布日期	1956.12.05
申请号	GB19540015239	申请日期	1954.05.24
申请人	ADELE OELLRICH	发明人
分类号	E21C29/18	主分类号	E21C29/18
代理机构		代理人
主权项
地址

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