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发明名称
IMPROVEMENTS IN MUSICAL DRUMS
摘要
申请公布号
GB8900052(D0)
申请公布日期
1989.03.01
申请号
GB19890000052
申请日期
1989.01.04
申请人
HODGEN, SAMUEL J
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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