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发明名称
High frequency attenuator
摘要
申请公布号
US2722661(A)
申请公布日期
1955.11.01
申请号
US19470793487
申请日期
1947.12.23
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
WALKER RICHARD M.
分类号
H01P1/22
主分类号
H01P1/22
代理机构
代理人
主权项
地址
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