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经营范围
发明名称
Improvements in or relating to valves of wind-operated musical instruments
摘要
申请公布号
GB587806(A)
申请公布日期
1947.05.06
申请号
GB19450001052
申请日期
1945.01.12
申请人
HECTOR SOMMARUGA
发明人
分类号
G10D9/04
主分类号
G10D9/04
代理机构
代理人
主权项
地址
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