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发明名称
Muting device for musical instruments
摘要
申请公布号
US2700913(A)
申请公布日期
1955.02.01
申请号
US19500202554
申请日期
1950.12.23
申请人
MARIO PANCOTTI
发明人
PANCOTTI MARIO
分类号
G10D11/02
主分类号
G10D11/02
代理机构
代理人
主权项
地址
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