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发明名称
Music teaching device
摘要
申请公布号
US3186292(A)
申请公布日期
1965.06.01
申请号
US19630268702
申请日期
1963.03.28
申请人
BURNS DORIS E
发明人
BURNS DORIS E.
分类号
G09B15/02
主分类号
G09B15/02
代理机构
代理人
主权项
地址
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