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经营范围
发明名称
Improvements in keyboards or arrangements of sounding bodies for musical apparatus
摘要
申请公布号
GB459900(A)
申请公布日期
1937.01.18
申请号
GB19350020973
申请日期
1935.07.23
申请人
HANS LUEDTKE
发明人
分类号
G09B15/02
主分类号
G09B15/02
代理机构
代理人
主权项
地址
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