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发明名称
KEYBOARD FOR A MONOPHONIC INSTRUMENT WITH IMPROVED SOUND-SUSTAINING MEANS
摘要
申请公布号
CA618820(A)
申请公布日期
1961.04.25
申请号
CAD618820
申请日期
申请人
HUGH LECAINE
发明人
HUGH LECAINE
分类号
主分类号
代理机构
代理人
主权项
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