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发明名称
Tunable band-pass selector
摘要
申请公布号
US2218980(A)
申请公布日期
1940.10.22
申请号
US19380241919
申请日期
1938.11.23
申请人
HAZELTINE CORPORATION
发明人
CAWEIN MADISON
分类号
H03H7/01
主分类号
H03H7/01
代理机构
代理人
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地址
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