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发明名称
摘要
申请公布号
JPS50141657(U)
申请公布日期
1975.11.21
申请号
JP19740052690U
申请日期
1974.05.09
申请人
发明人
分类号
G01B7/00;G01B7/02;(IPC1-7):G01B7/02
主分类号
G01B7/00
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