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经营范围
发明名称
Electric wave amplifier
摘要
申请公布号
US2581410(A)
申请公布日期
1952.01.08
申请号
US19490079466
申请日期
1949.03.03
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
HEATON-ARMSTRONG LOUIS JOHN
分类号
H03F1/33
主分类号
H03F1/33
代理机构
代理人
主权项
地址
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