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发明名称
Volume control system for radioreceivers
摘要
申请公布号
US1909954(A)
申请公布日期
1933.05.23
申请号
US19300474206
申请日期
1930.08.09
申请人
WIRED RADIO, INC.
发明人
OLSON JOHN
分类号
H03G5/26
主分类号
H03G5/26
代理机构
代理人
主权项
地址
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