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发明名称
Frequency converting radioreceiver
摘要
申请公布号
US1940519(A)
申请公布日期
1933.12.19
申请号
US19280327157
申请日期
1928.12.19
申请人
WYCKOFF RALPH D
发明人
WYCKOFF RALPH D.
分类号
H03D7/10
主分类号
H03D7/10
代理机构
代理人
主权项
地址
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