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发明名称
DIRECTIONAL COUPLER OF CENTER FREQUENCY VARIABLE TYPE
摘要
申请公布号
JPH03171901(A)
申请公布日期
1991.07.25
申请号
JP19890310943
申请日期
1989.11.30
申请人
NEC CORP
发明人
WATANABE YUICHI
分类号
H01P5/04;H01P5/16;H01P5/18
主分类号
H01P5/04
代理机构
代理人
主权项
地址
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