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发明名称
Piano construction
摘要
申请公布号
US1965360(A)
申请公布日期
1934.07.03
申请号
US19340705929
申请日期
1934.01.09
申请人
STEINWAY & SONS
发明人
STEINWAY THEODORE E.
分类号
G10C3/10
主分类号
G10C3/10
代理机构
代理人
主权项
地址
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