Improvements in or relating to shoring systems for underground workings,申请号GB19560035053-传众专利搜索

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发明名称	Improvements in or relating to shoring systems for underground workings
摘要
申请公布号	GB820751(A)	申请公布日期	1959.09.23
申请号	GB19560035053	申请日期	1956.11.16
申请人	JOHANN USSPURWIES G.M.B.H.	发明人
分类号	E21D11/28	主分类号	E21D11/28
代理机构		代理人
主权项
地址

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