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发明名称
TRACKER BAR AND MUSIC SHEET ROLL
摘要
申请公布号
US3440916(A)
申请公布日期
1969.04.29
申请号
USD3440916
申请日期
1966.07.08
申请人
JAMES S. BALLANTINE
发明人
JAMES S. BALLANTINE
分类号
G10F5/02;(IPC1-7):G10F5/04
主分类号
G10F5/02
代理机构
代理人
主权项
地址
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