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经营范围
发明名称
Parametric amplifiers
摘要
申请公布号
GB1013930(A)
申请公布日期
1965.12.22
申请号
GB19620024168
申请日期
1962.06.22
申请人
NIPPON ELECTRIC COMPANY LIMITED
发明人
分类号
H03F7/04
主分类号
H03F7/04
代理机构
代理人
主权项
地址
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