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发明名称
Tuning apparatus
摘要
申请公布号
US1890721(A)
申请公布日期
1932.12.13
申请号
US19250037634
申请日期
1925.06.17
申请人
KELLOGG SWITCHBOARD AND SUPPLY COMPANY
发明人
CURRIER HIRAM D.
分类号
H03J3/24
主分类号
H03J3/24
代理机构
代理人
主权项
地址
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