Improvements in fishplate connections for segments of supporting systems, especiallyof mine galleries,申请号GB19570023152-传众专利搜索

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发明名称	Improvements in fishplate connections for segments of supporting systems, especiallyof mine galleries
摘要
申请公布号	GB864790(A)	申请公布日期	1961.04.06
申请号	GB19570023152	申请日期	1957.07.22
申请人	BOCHUMER GESELLSCHAFT FUR GRUBENAUSBAU UND TECHNIK M.B.H.	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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