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经营范围
发明名称
Slide tubes for trombones and similar instruments
摘要
申请公布号
GB472510(A)
申请公布日期
1937.09.24
申请号
GB19360025245
申请日期
1936.09.16
申请人
REGINALD BIRDSALL OLDS
发明人
分类号
G10D7/10
主分类号
G10D7/10
代理机构
代理人
主权项
地址
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