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发明名称
Frequency monitoring system
摘要
申请公布号
US2478023(A)
申请公布日期
1949.08.02
申请号
US19460656224
申请日期
1946.03.22
申请人
GENERAL ELECTRIC COMPANY
发明人
JR. HARRY R. SUMMERHAYES,;HOWELLS PAUL W.
分类号
H03C3/09
主分类号
H03C3/09
代理机构
代理人
主权项
地址
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