Improvements relating to manhole structures,申请号GB19670013007-传众专利搜索

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发明名称	Improvements relating to manhole structures
摘要
申请公布号	GB1142123(A)	申请公布日期	1969.02.05
申请号	GB19670013007	申请日期	1967.03.20
申请人	BROADS MANUFACTURING COMPANY LIMITED	发明人	ROBINSON GERALD
分类号	E02D29/14	主分类号	E02D29/14
代理机构		代理人
主权项
地址

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