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发明名称
Improvements relating to musical instruments
摘要
申请公布号
GB342952(A)
申请公布日期
1931.02.12
申请号
GB19300010603
申请日期
1930.04.03
申请人
EDOUARD ELOI COUPLEUX;JOSEPH ARMAND GIVELET
发明人
分类号
G10H5/02
主分类号
G10H5/02
代理机构
代理人
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地址
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