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发明名称
DRUM BEATER DEVICE
摘要
申请公布号
US3439574(A)
申请公布日期
1969.04.22
申请号
USD3439574
申请日期
1966.12.30
申请人
JOHN R. RAMSEY
发明人
JOHN R. RAMSEY
分类号
G10D13/00;(IPC1-7):G10D13/00
主分类号
G10D13/00
代理机构
代理人
主权项
地址
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