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发明名称
Piano action
摘要
申请公布号
US2309278(A)
申请公布日期
1943.01.26
申请号
US19410377131
申请日期
1941.02.03
申请人
CARL SCHULZE
发明人
SCHULZE CARL
分类号
G10C3/16
主分类号
G10C3/16
代理机构
代理人
主权项
地址
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