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发明名称
Frequency indicating and controlling apparatus
摘要
申请公布号
US2111598(A)
申请公布日期
1938.03.22
申请号
US19350003675
申请日期
1935.01.26
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MARRISON WARREN A.
分类号
G01R23/00
主分类号
G01R23/00
代理机构
代理人
主权项
地址
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