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发明名称
FIFTH CHORDS INDICATING AND MUSIC TEACHING DEVICE
摘要
申请公布号
CA1023550(A)
申请公布日期
1978.01.03
申请号
CA19740217097
申请日期
1974.12.30
申请人
COURNOYER, GEORGES A.
发明人
COURNOYER, GEORGES A.
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主分类号
代理机构
代理人
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