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发明名称
Improvements in and relating to variable electric pile type resistances
摘要
申请公布号
GB511636(A)
申请公布日期
1939.08.22
申请号
GB19380016686
申请日期
1938.06.03
申请人
GENERAL ELECTRIC COMPANY
发明人
分类号
G05B11/01
主分类号
G05B11/01
代理机构
代理人
主权项
地址
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