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经营范围
发明名称
VARIABLE DIRECTIVITY ANTENNA
摘要
申请公布号
JPH03286604(A)
申请公布日期
1991.12.17
申请号
JP19900087568
申请日期
1990.04.03
申请人
NIPPON HOSO KYOKAI <NHK>
发明人
TOYAMA NOBORU
分类号
H01Q19/13;H01Q3/36;H01Q19/17;H01Q19/18;H01Q21/00;H01Q21/24
主分类号
H01Q19/13
代理机构
代理人
主权项
地址
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