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发明名称
摘要
申请公布号
JPS546962(U)
申请公布日期
1979.01.17
申请号
JP19770078846U
申请日期
1977.06.16
申请人
发明人
分类号
G01C15/00;E02D17/20;(IPC1-7):G01C15/00
主分类号
G01C15/00
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