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发明名称
Tone control
摘要
申请公布号
US1984357(A)
申请公布日期
1934.12.18
申请号
US19300459246
申请日期
1930.06.04
申请人
LOUIS GERARD PACENT
发明人
ACCVES JULIUS G.
分类号
H03G5/06
主分类号
H03G5/06
代理机构
代理人
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