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发明名称
Tube tester
摘要
申请公布号
US1920906(A)
申请公布日期
1933.08.01
申请号
US19300492560
申请日期
1930.10.31
申请人
WESTON ELECTRICAL INSTRUMENT CORPORATION
发明人
JR. WILLIAM NELSON GOODWIN,
分类号
E01B11/18;G01R31/25
主分类号
E01B11/18
代理机构
代理人
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