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发明名称
CALIBRATION DEVICE OF POWDER ELECTRIC CHARGE MEASURING INSTRUMENT
摘要
申请公布号
JPH04335168(A)
申请公布日期
1992.11.24
申请号
JP19910105393
申请日期
1991.05.10
申请人
MITA IND CO LTD
发明人
KOYAMA HARUO
分类号
G01R29/24
主分类号
G01R29/24
代理机构
代理人
主权项
地址
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