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发明名称
PIANO PLATES
摘要
申请公布号
US3461768(A)
申请公布日期
1969.08.19
申请号
USD3461768
申请日期
1968.06.10
申请人
O.S. KELLY CO.:THE
发明人
CARL ULTES JR.
分类号
G10C3/04;(IPC1-7):G10C3/08
主分类号
G10C3/04
代理机构
代理人
主权项
地址
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