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发明名称
Frequency meter
摘要
申请公布号
US2006935(A)
申请公布日期
1935.07.02
申请号
US19290337477
申请日期
1929.02.04
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
WOLF LESTER J.
分类号
G01R23/02
主分类号
G01R23/02
代理机构
代理人
主权项
地址
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