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发明名称
Musical instrument
摘要
申请公布号
US2045878(A)
申请公布日期
1936.06.30
申请号
US19340719948
申请日期
1934.04.10
申请人
THE VOCALSEVRO COMPANY
发明人
SEVERY MELVIN L.
分类号
G10H1/08
主分类号
G10H1/08
代理机构
代理人
主权项
地址
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