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发明名称
RINGMODULATOR
摘要
申请公布号
DE2454058(B2)
申请公布日期
1977.09.01
申请号
DE19742454058
申请日期
1974.11.14
申请人
发明人
分类号
H03C1/58;H03C7/02;(IPC1-7):H03C1/58
主分类号
H03C1/58
代理机构
代理人
主权项
地址
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