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发明名称
DRUM PRACTICE PAD
摘要
申请公布号
US3597520(A)
申请公布日期
1971.08.03
申请号
USD3597520
申请日期
1969.06.19
申请人
HENRY S. ANDREWS
发明人
HENRY S. ANDREWS
分类号
G10D13/02;(IPC1-7):G10D13/00
主分类号
G10D13/02
代理机构
代理人
主权项
地址
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