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发明名称
Damper for musical instruments
摘要
申请公布号
US2773408(A)
申请公布日期
1956.12.11
申请号
US19550492624
申请日期
1955.03.07
申请人
FERDINAND MACHALEK;JOSEPH LITOCHLEB
发明人
DVORAK JOSEPH F.
分类号
G10C3/26
主分类号
G10C3/26
代理机构
代理人
主权项
地址
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