Improvements in tunnel segments and the like,申请号GB19320016375-传众专利搜索

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发明名称	Improvements in tunnel segments and the like
摘要
申请公布号	GB403104(A)	申请公布日期	1933.12.11
申请号	GB19320016375	申请日期	1932.06.10
申请人	WILLIAM HENRY WRIGHT	发明人
分类号	E21D11/14	主分类号	E21D11/14
代理机构		代理人
主权项
地址

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