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发明名称
摘要
申请公布号
JPS4727979(U)
申请公布日期
1972.11.29
申请号
JP19710029587U
申请日期
1971.04.19
申请人
发明人
分类号
G01C22/00;G01B3/12;(IPC1-7):G01C22/00
主分类号
G01C22/00
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