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发明名称
TUNING MECHANISM FOR SOUND REPRODUCING APPARATUS
摘要
申请公布号
CA332266(A)
申请公布日期
1933.05.09
申请号
CAD332266
申请日期
申请人
JOHN SEARS
发明人
JOHN SEARS
分类号
主分类号
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代理人
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