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发明名称
Improvements in musical instruments
摘要
申请公布号
GB821174(A)
申请公布日期
1959.09.30
申请号
GB19570009638
申请日期
1957.03.25
申请人
ALBERT SLUYTER
发明人
分类号
G10C3/22
主分类号
G10C3/22
代理机构
代理人
主权项
地址
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