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发明名称
Valve action for pipe organs
摘要
申请公布号
US1767724(A)
申请公布日期
1930.06.24
申请号
US19270241511
申请日期
1927.12.21
申请人
MAGNETIC ORGAN ACTION COMPANY
发明人
WATERS HARRY F.
分类号
G10B1/04
主分类号
G10B1/04
代理机构
代理人
主权项
地址
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