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发明名称
PIANO ACTION
摘要
申请公布号
CA746246(A)
申请公布日期
1966.11.15
申请号
CAD746246
申请日期
申请人
PRATT, READ AND CO.
发明人
JULIUS E. UNDERWOOD, JR.;GENE A. STILES
分类号
主分类号
代理机构
代理人
主权项
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