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发明名称
Tube tester
摘要
申请公布号
US1854901(A)
申请公布日期
1932.04.19
申请号
US19310513688
申请日期
1931.02.05
申请人
WESTON ELECTRICAL INSTRUMENT CORPORATION
发明人
JR. WILLIAM NELSON GOODWIN,
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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