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发明名称
摘要
申请公布号
JPS494850(U)
申请公布日期
1974.01.15
申请号
JP19720043815U
申请日期
1972.04.13
申请人
发明人
分类号
E03C1/29;E03C1/28;(IPC1-7):E03C1/28
主分类号
E03C1/29
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代理人
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