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发明名称
Upright piano
摘要
申请公布号
US1794783(A)
申请公布日期
1931.03.03
申请号
US19280324738
申请日期
1928.12.03
申请人
WALDEMAR LUNDHOLM GUSTAF
发明人
LUNDHOLM GUSTAF WALDEMAR
分类号
G10C1/02
主分类号
G10C1/02
代理机构
代理人
主权项
地址
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