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发明名称
Permeability tuning system
摘要
申请公布号
US2486986(A)
申请公布日期
1949.11.01
申请号
US19430492506
申请日期
1943.06.28
申请人
RADIO CORPORATION
发明人
SANDS WILLIAM FRANCIS
分类号
H03J3/28
主分类号
H03J3/28
代理机构
代理人
主权项
地址
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