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发明名称
摘要
申请公布号
JPH018798(Y2)
申请公布日期
1989.03.09
申请号
JP19810101153U
申请日期
1981.07.06
申请人
发明人
分类号
F16L41/02;(IPC1-7):F16L41/02
主分类号
F16L41/02
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代理人
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