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发明名称
Musical instrument
摘要
申请公布号
US2171430(A)
申请公布日期
1939.08.29
申请号
US19370155665
申请日期
1937.07.26
申请人
EMIL E. DOPYERA
发明人
KISLINGBURY FREDRAY H.
分类号
G10H3/18
主分类号
G10H3/18
代理机构
代理人
主权项
地址
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