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申请公布号
JPS4975604(U)
申请公布日期
1974.07.01
申请号
JP19720119240U
申请日期
1972.10.17
申请人
发明人
分类号
E02F3/407;E02F3/40;(IPC1-7):E02F3/40
主分类号
E02F3/407
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