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发明名称
Piano tuning pin
摘要
申请公布号
US2588440(A)
申请公布日期
1952.03.11
申请号
US19490130658
申请日期
1949.12.02
申请人
WARREN HENRY E;WARREN RICHARD G
发明人
WARREN HENRY E.;WARREN RICHARD G.
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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