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发明名称
摘要
申请公布号
JPS4419338(Y1)
申请公布日期
1969.08.19
申请号
JP19650006533U
申请日期
1965.01.30
申请人
发明人
分类号
F16L25/00;E03C1/086;E03C1/12;F16L17/04;F16L33/00;F16L33/28;(IPC1-7):F16L17/04
主分类号
F16L25/00
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代理人
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地址
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