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经营范围
发明名称
Improvements in or relating to magnetic circuits
摘要
申请公布号
GB621220(A)
申请公布日期
1949.04.06
申请号
GB19460021642
申请日期
1946.07.19
申请人
JOHN WINSTON GALLOP
发明人
分类号
H05H7/04
主分类号
H05H7/04
代理机构
代理人
主权项
地址
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