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发明名称
Variometer
摘要
申请公布号
US2414280(A)
申请公布日期
1947.01.14
申请号
US19440555911
申请日期
1944.09.27
申请人
RADIO CORPORATION
发明人
THOMAS HARRY E.
分类号
H03H5/00;H03J3/00
主分类号
H03H5/00
代理机构
代理人
主权项
地址
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