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发明名称
Amplifying systems
摘要
申请公布号
US2978583(A)
申请公布日期
1961.04.04
申请号
US19570639083
申请日期
1957.02.08
申请人
AMERICAN MACHINE & FOUNDRY COMPANY
发明人
FEARNSIDE KENNETH
分类号
G01N23/08;G01T1/40;H01J43/30
主分类号
G01N23/08
代理机构
代理人
主权项
地址
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