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发明名称
摘要
申请公布号	JPS57184390(U)	申请公布日期	1982.11.22
申请号	JP19810072468U	申请日期	1981.05.19
申请人		发明人
分类号	F16L21/08;F16L23/02;F16L23/024;F16L23/026;F16L23/028;F16L47/00;(IPC1-7):F16L47/00	主分类号	F16L21/08
代理机构		代理人
主权项
地址

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