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发明名称
Detecting and amplifying system
摘要
申请公布号
US2030913(A)
申请公布日期
1936.02.18
申请号
US19320607855
申请日期
1932.04.27
申请人
ELLIOTT HAROLD F
发明人
ELLIOTT HAROLD F.
分类号
H03G3/22
主分类号
H03G3/22
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代理人
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