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发明名称
FREQUENCY BAND-PASS SELECTOR SYSTEM
摘要
申请公布号
CA397648(A)
申请公布日期
1941.07.01
申请号
CAD397648
申请日期
申请人
HAZELTINE CORPORATION
发明人
JOHN FISH FARRINGTON
分类号
主分类号
代理机构
代理人
主权项
地址
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