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发明名称
Circuit testing instrument
摘要
申请公布号
US1865583(A)
申请公布日期
1932.07.05
申请号
US19280321297
申请日期
1928.11.23
申请人
HEINRICH ONKEN
发明人
ONKEN HEINRICH
分类号
G01R1/067;G01R31/02
主分类号
G01R1/067
代理机构
代理人
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地址
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