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经营范围
发明名称
Valve action for cornets, trumpets, and like instruments
摘要
申请公布号
US2404818(A)
申请公布日期
1946.07.30
申请号
US19440552106
申请日期
1944.08.31
申请人
THE MARTIN BAND INSTRUMENT COMPANY
发明人
SWINEHART OSCAR E.
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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