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发明名称
摘要
申请公布号
JPS5619418(B2)
申请公布日期
1981.05.07
申请号
JP19770101851
申请日期
1977.08.24
申请人
发明人
分类号
F16L9/00;E03B7/10;G01F15/10
主分类号
F16L9/00
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代理人
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地址
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