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发明名称
AUTOMATIC MUSICAL RHYTHM DEVICE
摘要
申请公布号
CA879208(A)
申请公布日期
1971.08.24
申请号
CAD879208
申请日期
申请人
CHICAGO MUSICAL INSTRUMENT CO.
发明人
ALFRED B. FREEMAN
分类号
主分类号
代理机构
代理人
主权项
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