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发明名称
Electric current tester
摘要
申请公布号
US1886489(A)
申请公布日期
1932.11.08
申请号
US19300455758
申请日期
1930.05.26
申请人
LOUIS LUDWIG
发明人
LUDWIG LOUIS
分类号
G01R19/145
主分类号
G01R19/145
代理机构
代理人
主权项
地址
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