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经营范围
发明名称
Keying devices, particularly for electrical musical instruments
摘要
申请公布号
GB974760(A)
申请公布日期
1964.11.11
申请号
GB19610039621
申请日期
1961.11.06
申请人
ADOLF HEINRICH MICHEL
发明人
分类号
G10H1/055
主分类号
G10H1/055
代理机构
代理人
主权项
地址
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