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发明名称
PIANO STRING BRIDGING DEVICE
摘要
申请公布号
CA400367(A)
申请公布日期
1941.11.04
申请号
CAD400367
申请日期
申请人
WILLIAM R. KUZELKA
发明人
WILLIAM R. KUZELKA
分类号
主分类号
代理机构
代理人
主权项
地址
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