Improvements in or relating to method of and apparatus for forming underground openings,申请号GB19510001484-传众专利搜索

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发明名称	Improvements in or relating to method of and apparatus for forming underground openings
摘要
申请公布号	GB700016(A)	申请公布日期	1953.11.25
申请号	GB19510001484	申请日期	1951.01.19
申请人	INTERNATIONAL BASIC ECONOMY CORPORATION	发明人
分类号	E02B11/02;E02F5/10	主分类号	E02B11/02
代理机构		代理人
主权项
地址

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