Improvements in or relating to a concrete pipe and method of making the same,申请号GB19490020198-传众专利搜索

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发明名称	Improvements in or relating to a concrete pipe and method of making the same
摘要
申请公布号	GB663127(A)	申请公布日期	1951.12.19
申请号	GB19490020198	申请日期	1949.08.03
申请人	LOCK JOINT PIPE COMPANY	发明人
分类号	B28B21/74	主分类号	B28B21/74
代理机构		代理人
主权项
地址

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