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经营范围
发明名称
Frequency selective circuits
摘要
申请公布号
US2951990(A)
申请公布日期
1960.09.06
申请号
US19560615088
申请日期
1956.10.10
申请人
SUN OIL COMPANY
发明人
SHAWHAN ELBERT NEIL
分类号
H03D1/10
主分类号
H03D1/10
代理机构
代理人
主权项
地址
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