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经营范围
发明名称
Null detector
摘要
申请公布号
US2702854(A)
申请公布日期
1955.02.22
申请号
US19530399701
申请日期
1953.12.22
申请人
RADIO CORPORATION
发明人
WOODS WILLIAM E.
分类号
H03K5/24
主分类号
H03K5/24
代理机构
代理人
主权项
地址
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