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发明名称
Spinet piano action
摘要
申请公布号
US2230698(A)
申请公布日期
1941.02.04
申请号
US19380228363
申请日期
1938.09.03
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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