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发明名称
Musical chord change detector and indicator
摘要
申请公布号
US2004019475(A1)
申请公布日期
2004.01.29
申请号
US20020140525
申请日期
2002.05.06
申请人
BLOOM JOHN DONALD;O'NEAL THOMAS EVERETT
发明人
BLOOM JOHN DONALD;O'NEAL THOMAS EVERETT
分类号
G09B15/02;(IPC1-7):G09B15/02
主分类号
G09B15/02
代理机构
代理人
主权项
地址
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