A bell and spigot sealed joint steel pipe,申请号PHUM8780U-传众专利搜索

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发明名称	A bell and spigot sealed joint steel pipe
摘要
申请公布号	PHUM5608(Z)	申请公布日期	1984.09.07
申请号	PHUM8780U	申请日期	1984.03.16
申请人		发明人
分类号	F16L17/00;(IPC1-7):F16L17/00	主分类号	F16L17/00
代理机构		代理人
主权项
地址

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