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发明名称
Stationary inner slide tube for trombones and similar instruments
摘要
申请公布号
US2021323(A)
申请公布日期
1935.11.19
申请号
US19350015791
申请日期
1935.04.11
申请人
OLDS REGINALD B
发明人
OLDS REGINALD B.
分类号
G10D7/10
主分类号
G10D7/10
代理机构
代理人
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地址
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