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发明名称
摘要
申请公布号
JPS59173847(U)
申请公布日期
1984.11.20
申请号
JP19830064672U
申请日期
1983.04.26
申请人
发明人
分类号
E04G21/10;E04G21/18;G01C15/00;(IPC1-7):E04G21/18
主分类号
E04G21/10
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代理人
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