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发明名称
摘要
申请公布号
JPS5238734(Y1)
申请公布日期
1977.09.02
申请号
JP19700076804U
申请日期
1970.07.31
申请人
发明人
分类号
E03C1/02;F17D1/00;(IPC1-7):F17D1/00
主分类号
E03C1/02
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