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发明名称
Improvements in and relating to electric valve circuits
摘要
申请公布号
GB530105(A)
申请公布日期
1940.12.05
申请号
GB19390010180
申请日期
1939.03.31
申请人
GENERAL ELECTRIC COMPANY
发明人
分类号
B23K11/24
主分类号
B23K11/24
代理机构
代理人
主权项
地址
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