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发明名称
DEVICE FOR USE IN TRANSPOSING MUSICAL KEYS OR NOTES
摘要
申请公布号
GB1322910(A)
申请公布日期
1973.07.11
申请号
GBD1322910
申请日期
1970.06.24
申请人
HILL M A C
发明人
分类号
G10G1/04;(IPC1-7):G10G1/04
主分类号
G10G1/04
代理机构
代理人
主权项
地址
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