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发明名称
Automatic tuning device for polyphonic instruments
摘要
申请公布号
US2919620(A)
申请公布日期
1960.01.05
申请号
US19540418180
申请日期
1954.03.23
申请人
DORF RICHARD H
发明人
DORF RICHARD H.
分类号
G10H1/44
主分类号
G10H1/44
代理机构
代理人
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地址
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