Arch-type roof support for mine galleries,申请号GB19620010973-传众专利搜索

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发明名称	Arch-type roof support for mine galleries
摘要
申请公布号	GB952139(A)	申请公布日期	1964.03.11
申请号	GB19620010973	申请日期	1962.03.22
申请人	MARGOT VON LINSINGEN	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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