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发明名称
Improvements in direct-current generators
摘要
申请公布号
GB529639(A)
申请公布日期
1940.11.26
申请号
GB19390015198
申请日期
1939.05.22
申请人
WILSON WELDER AND METALS CO. INC.
发明人
分类号
H02K23/44
主分类号
H02K23/44
代理机构
代理人
主权项
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