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经营范围
发明名称
Electrical translating apparatus
摘要
申请公布号
US1878764(A)
申请公布日期
1932.09.20
申请号
US19290377020
申请日期
1929.07.09
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
DOWLING PHILIP H.
分类号
H03F9/02
主分类号
H03F9/02
代理机构
代理人
主权项
地址
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