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发明名称
FREQUENCY CONVERTER
摘要
申请公布号
JPH02250508(A)
申请公布日期
1990.10.08
申请号
JP19890072919
申请日期
1989.03.24
申请人
NIPPON TELEGR & TELEPH CORP <NTT>
发明人
IMAI YUUKI;MINAGAWA AKIRA;SUGATA TAKAYUKI
分类号
H03D7/12
主分类号
H03D7/12
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代理人
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