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发明名称
Mute for musical instruments
摘要
申请公布号
US2571809(A)
申请公布日期
1951.10.16
申请号
US19480012622
申请日期
1948.03.02
申请人
ALTOSINO JOHN A
发明人
ALTOSINO JOHN A.
分类号
G10D9/06
主分类号
G10D9/06
代理机构
代理人
主权项
地址
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