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发明名称
AUTOMATIC VOLUME CONTROL
摘要
申请公布号
CA445352(A)
申请公布日期
1947.12.02
申请号
CAD445352
申请日期
申请人
FARNSWORTH TELEVISION AND RADIO CORPORATION
发明人
MADISON CAWEIN
分类号
主分类号
代理机构
代理人
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