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发明名称
Improvements in or relating to electrical musical instruments
摘要
申请公布号
GB353918(A)
申请公布日期
1931.07.24
申请号
GB19300012686
申请日期
1930.04.24
申请人
NICHOLAS LANGER;JOHN HALMAGYI
发明人
NICHOLAS LANGER;JOHN HALMAGYI
分类号
G10H5/10
主分类号
G10H5/10
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代理人
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