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发明名称
Tone-control system
摘要
申请公布号
US2236364(A)
申请公布日期
1941.03.25
申请号
US19390309551
申请日期
1939.12.16
申请人
HAZELTINE CORPORATION
发明人
CASE NELSON P.
分类号
H03G5/06
主分类号
H03G5/06
代理机构
代理人
主权项
地址
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