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发明名称
Automatic volume control
摘要
申请公布号
US2001950(A)
申请公布日期
1935.05.21
申请号
US19310556979
申请日期
1931.08.14
申请人
HAZELTINE CORPORATION
发明人
WHEELER HAROLD A.
分类号
H03G1/04
主分类号
H03G1/04
代理机构
代理人
主权项
地址
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