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经营范围
发明名称
Improvements in or relating to electric valve control systems for a.c. circuits
摘要
申请公布号
GB591052(A)
申请公布日期
1947.08.06
申请号
GB19440005234
申请日期
1944.03.21
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED
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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