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经营范围
发明名称
Improvements in, or relating to, electrical circuits for the amplification of electrical impulses
摘要
申请公布号
GB335295(A)
申请公布日期
1930.09.25
申请号
GB19290020762
申请日期
1929.07.05
申请人
JAMES IRVINE SMITH;ALBERT EDWARD CLARKE
发明人
分类号
H03F3/28
主分类号
H03F3/28
代理机构
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