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发明名称
Musical tuning instrument
摘要
申请公布号
US2207450(A)
申请公布日期
1940.07.09
申请号
US19380222765
申请日期
1938.08.03
申请人
BERGAN KENNETH N;SKARSHAUG WALLACE O
发明人
BERGAN KENNETH N.;SKARSHAUG WALLACE O.
分类号
G10H1/44
主分类号
G10H1/44
代理机构
代理人
主权项
地址
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