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发明名称
Testing device
摘要
申请公布号
US2179048(A)
申请公布日期
1939.11.07
申请号
US19370128265
申请日期
1937.02.27
申请人
WESTON ELECTRICAL INSTRUMENT CORPORATION
发明人
MILLER JOHN H.
分类号
G01R31/25
主分类号
G01R31/25
代理机构
代理人
主权项
地址
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