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发明名称
MUSIC-NOTE INDICATING DEVICE
摘要
申请公布号
US3429216(A)
申请公布日期
1969.02.25
申请号
USD3429216
申请日期
1966.04.26
申请人
SIDNEY J. LAWRENCE
发明人
SIDNEY J. LAWRENCE
分类号
G09B15/04;G10G1/02;(IPC1-7):G09B15/02;G09B15/00
主分类号
G09B15/04
代理机构
代理人
主权项
地址
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