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发明名称
Direct current measuring apparatus
摘要
申请公布号
US2857571(A)
申请公布日期
1958.10.21
申请号
US19570645602
申请日期
1957.03.12
申请人
DAYSTROM, INCORPORATED
发明人
GILBERT ROSWELL W.
分类号
G01R19/20
主分类号
G01R19/20
代理机构
代理人
主权项
地址
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