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经营范围
发明名称
Improvements in stringed key instruments
摘要
申请公布号
GB440297(A)
申请公布日期
1935.12.24
申请号
GB19340037276
申请日期
1934.12.29
申请人
REINHOLD SCHROETHER
发明人
分类号
G10C3/06
主分类号
G10C3/06
代理机构
代理人
主权项
地址
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