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发明名称
摘要
申请公布号	GB1227137(A)	申请公布日期	1971.04.07
申请号	GBD1227137	申请日期	1967.06.02
申请人		发明人
分类号	F16L11/08	主分类号	F16L11/08
代理机构		代理人
主权项
地址

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