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发明名称
摘要
申请公布号
JPS5540142(B2)
申请公布日期
1980.10.16
申请号
JP19730114221
申请日期
1973.10.11
申请人
发明人
分类号
E02F5/10;F16L1/00
主分类号
E02F5/10
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