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发明名称
摘要
申请公布号
JPS4889742(A)
申请公布日期
1973.11.22
申请号
JP19720018522
申请日期
1972.02.24
申请人
发明人
分类号
G09B23/00;G01N1/28;G02B21/06
主分类号
G09B23/00
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代理人
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地址
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