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经营范围
发明名称
Musical scale indicating device
摘要
申请公布号
GB2048551(A)
申请公布日期
1980.12.10
申请号
GB19790010376
申请日期
1979.03.23
申请人
ALLEN W
发明人
分类号
G10G1/04;(IPC1-7):G10G1/00
主分类号
G10G1/04
代理机构
代理人
主权项
地址
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